Exact Mass: 597.2581

(1R)-N,N-dicarbamimidoyl-O4-[3-carboxy-O2-(2-methylamino-2-deoxy-alpha-L-glucopyranosyl)-5-deoxy-alpha-L-lyxofuranosyl]-streptamine|(1R)-N,N-Dicarbamimidoyl-O4-[3-carboxy-O2-(2-methylamino-2-desoxy-alpha-L-glucopyranosyl)-5-desoxy-alpha-L-lyxofuranosyl]-streptamin|Streptomycinsaeure

(1R)-N,N-dicarbamimidoyl-O4-[3-carboxy-O2-(2-methylamino-2-deoxy-alpha-L-glucopyranosyl)-5-deoxy-alpha-L-lyxofuranosyl]-streptamine|(1R)-N,N-Dicarbamimidoyl-O4-[3-carboxy-O2-(2-methylamino-2-desoxy-alpha-L-glucopyranosyl)-5-desoxy-alpha-L-lyxofuranosyl]-streptamin|Streptomycinsaeure

C32H39NO10

Ingal-3,7,12-triacetat-8-nicotinat

His His Ala Ala Tyr

Glu Met Arg Tyr

(4S)-4-amino-4-{[(1S)-1-{[(1S)-4-carbamimidamido-1-{[(1S)-1-carboxy-2-(4-hydroxyphenyl)ethyl]carbamoyl}butyl]carbamoyl}-3-(methylsulfanyl)propyl]carbamoyl}butanoic acid

Glu Met Tyr Arg

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carboxybutanamido]-4-(methylsulfanyl)butanamido]-3-(4-hydroxyphenyl)propanamido]-5-carbamimidamidopentanoic acid

Glu Arg Met Tyr

(4S)-4-amino-4-{[(1S)-4-carbamimidamido-1-{[(1S)-1-{[(1S)-1-carboxy-2-(4-hydroxyphenyl)ethyl]carbamoyl}-3-(methylsulfanyl)propyl]carbamoyl}butyl]carbamoyl}butanoic acid

Glu Arg Tyr Met

(4S)-4-amino-4-{[(1S)-4-carbamimidamido-1-{[(1S)-1-{[(1S)-1-carboxy-3-(methylsulfanyl)propyl]carbamoyl}-2-(4-hydroxyphenyl)ethyl]carbamoyl}butyl]carbamoyl}butanoic acid

Glu Tyr Met Arg

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carboxybutanamido]-3-(4-hydroxyphenyl)propanamido]-4-(methylsulfanyl)butanamido]-5-carbamimidamidopentanoic acid

Glu Tyr Arg Met

(4S)-4-amino-4-{[(1S)-1-{[(1S)-4-carbamimidamido-1-{[(1S)-1-carboxy-3-(methylsulfanyl)propyl]carbamoyl}butyl]carbamoyl}-2-(4-hydroxyphenyl)ethyl]carbamoyl}butanoic acid

His Gln Gln Trp

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(1H-imidazol-4-yl)propanamido]-4-carbamoylbutanamido]-4-carbamoylbutanamido]-3-(1H-indol-3-yl)propanoic acid

His Gln Trp Gln

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(1H-imidazol-4-yl)propanamido]-4-carbamoylbutanamido]-3-(1H-indol-3-yl)propanamido]-4-carbamoylbutanoic acid

His Trp Gln Gln

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(1H-imidazol-4-yl)propanamido]-3-(1H-indol-3-yl)propanamido]-4-carbamoylbutanamido]-4-carbamoylbutanoic acid

Met Glu Arg Tyr

(4S)-4-[(2S)-2-amino-4-(methylsulfanyl)butanamido]-4-{[(1S)-4-carbamimidamido-1-{[(1S)-1-carboxy-2-(4-hydroxyphenyl)ethyl]carbamoyl}butyl]carbamoyl}butanoic acid

Met Glu Tyr Arg

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-(methylsulfanyl)butanamido]-4-carboxybutanamido]-3-(4-hydroxyphenyl)propanamido]-5-carbamimidamidopentanoic acid

Met Arg Glu Tyr

(4S)-4-[(2S)-2-[(2S)-2-amino-4-(methylsulfanyl)butanamido]-5-carbamimidamidopentanamido]-4-{[(1S)-1-carboxy-2-(4-hydroxyphenyl)ethyl]carbamoyl}butanoic acid

Met Arg Tyr Glu

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-(methylsulfanyl)butanamido]-5-carbamimidamidopentanamido]-3-(4-hydroxyphenyl)propanamido]pentanedioic acid

Met Val Trp Tyr

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-(methylsulfanyl)butanamido]-3-methylbutanamido]-3-(1H-indol-3-yl)propanamido]-3-(4-hydroxyphenyl)propanoic acid

Met Val Tyr Trp

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-(methylsulfanyl)butanamido]-3-methylbutanamido]-3-(4-hydroxyphenyl)propanamido]-3-(1H-indol-3-yl)propanoic acid

Met Trp Val Tyr

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-(methylsulfanyl)butanamido]-3-(1H-indol-3-yl)propanamido]-3-methylbutanamido]-3-(4-hydroxyphenyl)propanoic acid

Met Trp Tyr Val

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-(methylsulfanyl)butanamido]-3-(1H-indol-3-yl)propanamido]-3-(4-hydroxyphenyl)propanamido]-3-methylbutanoic acid

Met Tyr Glu Arg

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-(methylsulfanyl)butanamido]-3-(4-hydroxyphenyl)propanamido]-4-carboxybutanamido]-5-carbamimidamidopentanoic acid

Met Tyr Arg Glu

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-(methylsulfanyl)butanamido]-3-(4-hydroxyphenyl)propanamido]-5-carbamimidamidopentanamido]pentanedioic acid

Met Tyr Val Trp

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-(methylsulfanyl)butanamido]-3-(4-hydroxyphenyl)propanamido]-3-methylbutanamido]-3-(1H-indol-3-yl)propanoic acid

Met Tyr Trp Val

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-(methylsulfanyl)butanamido]-3-(4-hydroxyphenyl)propanamido]-3-(1H-indol-3-yl)propanamido]-3-methylbutanoic acid

Gln His Gln Trp

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-(1H-imidazol-4-yl)propanamido]-4-carbamoylbutanamido]-3-(1H-indol-3-yl)propanoic acid

Gln His Trp Gln

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-(1H-imidazol-4-yl)propanamido]-3-(1H-indol-3-yl)propanamido]-4-carbamoylbutanoic acid

Gln Gln His Trp

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-4-carbamoylbutanamido]-3-(1H-imidazol-4-yl)propanamido]-3-(1H-indol-3-yl)propanoic acid

Gln Gln Trp His

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-4-carbamoylbutanamido]-3-(1H-indol-3-yl)propanamido]-3-(1H-imidazol-4-yl)propanoic acid

Gln Trp His Gln

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-(1H-indol-3-yl)propanamido]-3-(1H-imidazol-4-yl)propanamido]-4-carbamoylbutanoic acid

Gln Trp Gln His

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-4-carbamoylbutanamido]-3-(1H-indol-3-yl)propanamido]-4-carbamoylbutanamido]-3-(1H-imidazol-4-yl)propanoic acid

Arg Glu Met Tyr

(4S)-4-[(2S)-2-amino-5-carbamimidamidopentanamido]-4-{[(1S)-1-{[(1S)-1-carboxy-2-(4-hydroxyphenyl)ethyl]carbamoyl}-3-(methylsulfanyl)propyl]carbamoyl}butanoic acid

Arg Glu Tyr Met

(4S)-4-[(2S)-2-amino-5-carbamimidamidopentanamido]-4-{[(1S)-1-{[(1S)-1-carboxy-3-(methylsulfanyl)propyl]carbamoyl}-2-(4-hydroxyphenyl)ethyl]carbamoyl}butanoic acid

Arg Met Glu Tyr

(4S)-4-[(2S)-2-[(2S)-2-amino-5-carbamimidamidopentanamido]-4-(methylsulfanyl)butanamido]-4-{[(1S)-1-carboxy-2-(4-hydroxyphenyl)ethyl]carbamoyl}butanoic acid

Arg Met Tyr Glu

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-5-carbamimidamidopentanamido]-4-(methylsulfanyl)butanamido]-3-(4-hydroxyphenyl)propanamido]pentanedioic acid

Arg Tyr Glu Met

(4S)-4-[(2S)-2-[(2S)-2-amino-5-carbamimidamidopentanamido]-3-(4-hydroxyphenyl)propanamido]-4-{[(1S)-1-carboxy-3-(methylsulfanyl)propyl]carbamoyl}butanoic acid

Arg Tyr Met Glu

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-5-carbamimidamidopentanamido]-3-(4-hydroxyphenyl)propanamido]-4-(methylsulfanyl)butanamido]pentanedioic acid

Val Met Trp Tyr

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-4-(methylsulfanyl)butanamido]-3-(1H-indol-3-yl)propanamido]-3-(4-hydroxyphenyl)propanoic acid

Val Met Tyr Trp

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-4-(methylsulfanyl)butanamido]-3-(4-hydroxyphenyl)propanamido]-3-(1H-indol-3-yl)propanoic acid

Val Trp Met Tyr

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-3-(1H-indol-3-yl)propanamido]-4-(methylsulfanyl)butanamido]-3-(4-hydroxyphenyl)propanoic acid

Val Trp Tyr Met

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-3-(1H-indol-3-yl)propanamido]-3-(4-hydroxyphenyl)propanamido]-4-(methylsulfanyl)butanoic acid

Val Tyr Met Trp

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-3-(4-hydroxyphenyl)propanamido]-4-(methylsulfanyl)butanamido]-3-(1H-indol-3-yl)propanoic acid

Val Tyr Trp Met

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-methylbutanamido]-3-(4-hydroxyphenyl)propanamido]-3-(1H-indol-3-yl)propanamido]-4-(methylsulfanyl)butanoic acid

Trp His Gln Gln

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(1H-indol-3-yl)propanamido]-3-(1H-imidazol-4-yl)propanamido]-4-carbamoylbutanamido]-4-carbamoylbutanoic acid

Trp Met Val Tyr

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(1H-indol-3-yl)propanamido]-4-(methylsulfanyl)butanamido]-3-methylbutanamido]-3-(4-hydroxyphenyl)propanoic acid

Trp Met Tyr Val

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(1H-indol-3-yl)propanamido]-4-(methylsulfanyl)butanamido]-3-(4-hydroxyphenyl)propanamido]-3-methylbutanoic acid

Trp Gln His Gln

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(1H-indol-3-yl)propanamido]-4-carbamoylbutanamido]-3-(1H-imidazol-4-yl)propanamido]-4-carbamoylbutanoic acid

Trp Gln Gln His

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(1H-indol-3-yl)propanamido]-4-carbamoylbutanamido]-4-carbamoylbutanamido]-3-(1H-imidazol-4-yl)propanoic acid

Trp Val Met Tyr

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(1H-indol-3-yl)propanamido]-3-methylbutanamido]-4-(methylsulfanyl)butanamido]-3-(4-hydroxyphenyl)propanoic acid

Trp Val Tyr Met

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(1H-indol-3-yl)propanamido]-3-methylbutanamido]-3-(4-hydroxyphenyl)propanamido]-4-(methylsulfanyl)butanoic acid

Trp Tyr Met Val

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(1H-indol-3-yl)propanamido]-3-(4-hydroxyphenyl)propanamido]-4-(methylsulfanyl)butanamido]-3-methylbutanoic acid

Trp Tyr Val Met

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(1H-indol-3-yl)propanamido]-3-(4-hydroxyphenyl)propanamido]-3-methylbutanamido]-4-(methylsulfanyl)butanoic acid

Tyr Glu Met Arg

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]-4-carboxybutanamido]-4-(methylsulfanyl)butanamido]-5-carbamimidamidopentanoic acid

Tyr Glu Arg Met

(4S)-4-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]-4-{[(1S)-4-carbamimidamido-1-{[(1S)-1-carboxy-3-(methylsulfanyl)propyl]carbamoyl}butyl]carbamoyl}butanoic acid

Tyr Met Glu Arg

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]-4-(methylsulfanyl)butanamido]-4-carboxybutanamido]-5-carbamimidamidopentanoic acid

Tyr Met Arg Glu

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]-4-(methylsulfanyl)butanamido]-5-carbamimidamidopentanamido]pentanedioic acid

Tyr Met Val Trp

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]-4-(methylsulfanyl)butanamido]-3-methylbutanamido]-3-(1H-indol-3-yl)propanoic acid

Tyr Met Trp Val

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]-4-(methylsulfanyl)butanamido]-3-(1H-indol-3-yl)propanamido]-3-methylbutanoic acid

Tyr Arg Glu Met

(4S)-4-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]-5-carbamimidamidopentanamido]-4-{[(1S)-1-carboxy-3-(methylsulfanyl)propyl]carbamoyl}butanoic acid

Tyr Arg Met Glu

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]-5-carbamimidamidopentanamido]-4-(methylsulfanyl)butanamido]pentanedioic acid

Tyr Val Met Trp

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]-3-methylbutanamido]-4-(methylsulfanyl)butanamido]-3-(1H-indol-3-yl)propanoic acid

Tyr Val Trp Met

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]-3-methylbutanamido]-3-(1H-indol-3-yl)propanamido]-4-(methylsulfanyl)butanoic acid

Tyr Trp Met Val

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]-3-(1H-indol-3-yl)propanamido]-4-(methylsulfanyl)butanamido]-3-methylbutanoic acid

Tyr Trp Val Met

(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]-3-(1H-indol-3-yl)propanamido]-3-methylbutanamido]-4-(methylsulfanyl)butanoic acid

HHAAY

His-His-Ala-Ala-Tyr

Streptomycin C

2-[(1S,2R,3R,4S,5R,6R)-2-[[(2R,3R,4R,5S)-3-[[(2S,3S,4S,5R,6S)-4,5-dihydroxy-6-(hydroxymethyl)-3-methylamino-2-tetrahydropyranyl]oxy]-4-formyl-4-hydroxy-5-(hydroxymethyl)-2-tetrahydrofuranyl]oxy]-5-guanidino-3,4,6-trihydroxycyclohexyl]guanidine

5-Hydroxystreptomycin

A streptomycin bearing an additional hydroxy substituent at the 5-position (on the furanose ring)

ST 27:5;O7;Tau

C29H43NO10S (597.2608)

[6,9-bis(acetyloxy)-12-hydroxy-5a,8,11a-trimethyl-1-oxo-3-(pyridin-3-yl)-6,7,7a,9,10,11,11b,12-octahydro-2,5-dioxatetraphen-8-yl]methyl propanoate

8-methyl-6-{[3-(3,4,5-trimethoxyphenyl)prop-2-enoyl]oxy}-8-azabicyclo[3.2.1]octan-3-yl 3-(3,4,5-trimethoxyphenyl)prop-2-enoate

[(5as,6s,7ar,8r,9s,11as,11bs,12r)-6-(acetyloxy)-9-[(acetyloxy)methyl]-12-hydroxy-5a,8,11a-trimethyl-1-oxo-3-(pyridin-3-yl)-6,7,7a,9,10,11,11b,12-octahydro-2,5-dioxatetraphen-8-yl]methyl acetate

(10z)-4,9,13-tris(acetyloxy)-3,6,6,10,14-pentamethyl-2-oxo-16-oxatetracyclo[10.3.1.0¹,¹².0⁵,⁷]hexadec-10-en-8-yl pyridine-3-carboxylate

(1r,3s,4r,5r,7r,8r,9s,10z,12s,13r,14s)-4,9,13-tris(acetyloxy)-3,6,6,10,14-pentamethyl-2-oxo-16-oxatetracyclo[10.3.1.0¹,¹².0⁵,⁷]hexadec-10-en-8-yl pyridine-3-carboxylate

(1s,3s,5r,6s)-8-methyl-6-{[(2e)-3-(3,4,5-trimethoxyphenyl)prop-2-enoyl]oxy}-8-azabicyclo[3.2.1]octan-3-yl (2e)-3-(3,4,5-trimethoxyphenyl)prop-2-enoate

[(5as,7ar,9s,11as,11bs,12r)-9-(acetyloxy)-8-[(acetyloxy)methyl]-12-hydroxy-5a,11a-dimethyl-1-oxo-3-(pyridin-3-yl)-6,7,7a,9,10,11,11b,12-octahydro-2,5-dioxatetraphen-8-yl]methyl propanoate

(5as,6s,7ar,8r,9s,11as,11bs,12r)-9-(acetyloxy)-8-[(acetyloxy)methyl]-12-hydroxy-5a,8,11a-trimethyl-1-oxo-3-(pyridin-3-yl)-6,7,7a,9,10,11,11b,12-octahydro-2,5-dioxatetraphen-6-yl propanoate

9-(acetyloxy)-8-[(acetyloxy)methyl]-12-hydroxy-5a,8,11a-trimethyl-1-oxo-3-(pyridin-3-yl)-6,7,7a,9,10,11,11b,12-octahydro-2,5-dioxatetraphen-6-yl propanoate

n-[(1s,2r,3r,4s,5r,6r)-3-carbamimidamido-6-{[(2r,3r,4r,5s)-3-{[(2s,3s,4s,5r,6s)-4,5-dihydroxy-6-(hydroxymethyl)-3-(methylamino)oxan-2-yl]oxy}-4-formyl-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]oxy}-2,4,5-trihydroxycyclohexyl]guanidine

n-[(1s,2r,3r,4s,5r,6r)-3-carbamimidamido-6-{[(2r,3r,4r,5s)-3-{[(2s,3s,4s,5r,6s)-4,5-dihydroxy-6-(hydroxymethyl)-3-(methylamino)oxan-2-yl]oxy}-4-formyl-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]oxy}-2,4,5-trihydroxycyclohexyl]guanidine

n-{3-carbamimidamido-4-[(3-{[4,5-dihydroxy-6-(hydroxymethyl)-3-(methylamino)oxan-2-yl]oxy}-4-formyl-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl)oxy]-2,5,6-trihydroxycyclohexyl}guanidine

1',11',14'-tris(acetyloxy)-3',6',6',14'-tetramethyl-2'-oxospiro[oxirane-2,10'-tricyclo[10.3.0.0⁵,⁷]pentadecan]-3'-en-13'-yl pyridine-3-carboxylate

4,9,13-tris(acetyloxy)-3,6,6,10,14-pentamethyl-2-oxo-16-oxatetracyclo[10.3.1.0¹,¹².0⁵,⁷]hexadec-10-en-8-yl pyridine-3-carboxylate

6-(acetyloxy)-8-[(acetyloxy)methyl]-12-hydroxy-5a,8,11a-trimethyl-1-oxo-3-(pyridin-3-yl)-6,7,7a,9,10,11,11b,12-octahydro-2,5-dioxatetraphen-9-yl propanoate

(3s,6s)-8-methyl-6-{[(2e)-3-(3,4,5-trimethoxyphenyl)prop-2-enoyl]oxy}-8-azabicyclo[3.2.1]octan-3-yl (2e)-3-(3,4,5-trimethoxyphenyl)prop-2-enoate

[(5as,6s,7ar,8r,9s,11as,11bs,12r)-6,9-bis(acetyloxy)-12-hydroxy-5a,8,11a-trimethyl-1-oxo-3-(pyridin-3-yl)-6,7,7a,9,10,11,11b,12-octahydro-2,5-dioxatetraphen-8-yl]methyl propanoate

(5as,6s,7ar,8r,9s,11as,11bs,12r)-6-(acetyloxy)-8-[(acetyloxy)methyl]-12-hydroxy-5a,8,11a-trimethyl-1-oxo-3-(pyridin-3-yl)-6,7,7a,9,10,11,11b,12-octahydro-2,5-dioxatetraphen-9-yl propanoate

(1'r,2r,3'e,5'r,7's,11'r,12'r,13'r,14's)-1',11',14'-tris(acetyloxy)-3',6',6',14'-tetramethyl-2'-oxospiro[oxirane-2,10'-tricyclo[10.3.0.0⁵,⁷]pentadecan]-3'-en-13'-yl pyridine-3-carboxylate