Exact Mass: 1325.1099

A heterodetic cyclic peptide consisting of N-acylated trytophan, 3,5-dichloro-4-hydroxyphenylglycine, 4-hydroxyphenylglycine, 3,5-dichloro-4-hydroxyphenylglycyl, tyrosine and 4-hydroxyphenylglycine residues joined in sequence and in which the side-chain of the central 4-hydroxyphenylglycine residue is attached to the side-chain of the tryptophan via a C3-C6 bond and to the side-chain of the tyrosine via an ether bond from C5. It is isolated from the culture broth of Streptomyces and has anti-HIV-1 activity.

Sch 79236

Chloropeptin I

A heterodetic cyclic peptide consisting of N-acylated trytophan, 3,5-dichloro-4-hydroxyphenylglycine, 4-hydroxyphenylglycine, 3,5-dichloro-4-hydroxyphenylglycyl, tyrosine and 4-hydroxyphenylglycine residues joined in sequence and in which the side-chain of the central 4-hydroxyphenylglycine residue is attached to the side-chain of the tryptophan via a C3-C7 bond and to the side-chain of the tyrosine via an ether bond from C5. It is isolated from the culture broth of Streptomyces and has anti-HIV-1 activity.

[(6Z,10Z,14Z,18Z,22Z,26Z,30Z,34Z,38Z,42Z,46Z,50Z,54Z,58Z,62E,66E)-3,7,11,15,19,23,27,31,35,39,43,47,51,55,59,63,67,71-octadecamethyldoheptaconta-6,10,14,18,22,26,30,34,38,42,46,50,54,58,62,66,70-heptadecaenyl] dihydrogen phosphate

[(6Z,10Z,14Z,18Z,22Z,26Z,30Z,34Z,38Z,42Z,46Z,50Z,54Z,58Z,62E,66E)-3,7,11,15,19,23,27,31,35,39,43,47,51,55,59,63,67,71-octadecamethyldoheptaconta-6,10,14,18,22,26,30,34,38,42,46,50,54,58,62,66,70-heptadecaenyl] dihydrogen phosphate

C90H149O4P (1325.1193)

[(4E,8E,12E)-3-hydroxy-2-[[(17Z,20Z,23Z,26Z,29Z,32Z,35Z,38Z,41Z)-tetratetraconta-17,20,23,26,29,32,35,38,41-nonaenoyl]amino]hexatriaconta-4,8,12-trienyl] 2-(trimethylazaniumyl)ethyl phosphate

[(E)-3-hydroxy-2-[[(11Z,14Z,17Z,20Z,23Z,26Z,29Z,32Z,35Z,38Z,41Z)-tetratetraconta-11,14,17,20,23,26,29,32,35,38,41-undecaenoyl]amino]hexatriacont-4-enyl] 2-(trimethylazaniumyl)ethyl phosphate

[(4E,8E)-3-hydroxy-2-[[(14Z,17Z,20Z,23Z,26Z,29Z,32Z,35Z,38Z,41Z)-tetratetraconta-14,17,20,23,26,29,32,35,38,41-decaenoyl]amino]hexatriaconta-4,8-dienyl] 2-(trimethylazaniumyl)ethyl phosphate

[3-hydroxy-2-[[(8Z,11Z,14Z,17Z,20Z,23Z,26Z,29Z,32Z,35Z,38Z,41Z)-tetratetraconta-8,11,14,17,20,23,26,29,32,35,38,41-dodecaenoyl]amino]hexatriacontyl] 2-(trimethylazaniumyl)ethyl phosphate

2-[carboxy-[2-[(24Z,27Z,30Z,33Z,36Z,39Z)-dotetraconta-24,27,30,33,36,39-hexaenoyl]oxy-3-[(22Z,25Z,28Z,31Z)-tetratriaconta-22,25,28,31-tetraenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[3-[(21Z,24Z,27Z,30Z,33Z)-hexatriaconta-21,24,27,30,33-pentaenoyl]oxy-2-[(25Z,28Z,31Z,34Z,37Z)-tetraconta-25,28,31,34,37-pentaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[hydroxy-[3-pentatriacontanoyloxy-2-[(22Z,25Z,28Z,31Z,34Z,37Z)-tetraconta-22,25,28,31,34,37-hexaenoyl]oxypropoxy]phosphoryl]oxyethyl-trimethylazanium

2-[carboxy-[3-dotriacontanoyloxy-2-[(14Z,17Z,20Z,23Z,26Z,29Z,32Z,35Z,38Z,41Z)-tetratetraconta-14,17,20,23,26,29,32,35,38,41-decaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[[2-[(24Z,27Z,30Z,33Z,36Z,39Z)-dotetraconta-24,27,30,33,36,39-hexaenoyl]oxy-3-tritriacontanoyloxypropoxy]-hydroxyphosphoryl]oxyethyl-trimethylazanium

2-[2,3-bis[[(23Z,26Z,29Z,32Z,35Z)-octatriaconta-23,26,29,32,35-pentaenoyl]oxy]propoxy-carboxymethoxy]ethyl-trimethylazanium

2-[[2-[(18Z,21Z,24Z,27Z,30Z,33Z)-hexatriaconta-18,21,24,27,30,33-hexaenoyl]oxy-3-nonatriacontanoyloxypropoxy]-hydroxyphosphoryl]oxyethyl-trimethylazanium

2-[carboxy-[2-[(5Z,8Z,11Z,14Z,17Z,20Z,23Z,26Z,29Z)-dotriaconta-5,8,11,14,17,20,23,26,29-nonaenoyl]oxy-3-[(Z)-tetratetracont-33-enoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[2-[(27Z,30Z,33Z,36Z,39Z)-dotetraconta-27,30,33,36,39-pentaenoyl]oxy-3-[(19Z,22Z,25Z,28Z,31Z)-tetratriaconta-19,22,25,28,31-pentaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[3-[(31Z,34Z)-dotetraconta-31,34-dienoyl]oxy-2-[(10Z,13Z,16Z,19Z,22Z,25Z,28Z,31Z)-tetratriaconta-10,13,16,19,22,25,28,31-octaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[3-[(21Z,24Z)-dotriaconta-21,24-dienoyl]oxy-2-[(20Z,23Z,26Z,29Z,32Z,35Z,38Z,41Z)-tetratetraconta-20,23,26,29,32,35,38,41-octaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[3-[(30Z,33Z,36Z,39Z)-dotetraconta-30,33,36,39-tetraenoyl]oxy-2-[(16Z,19Z,22Z,25Z,28Z,31Z)-tetratriaconta-16,19,22,25,28,31-hexaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[3-[(18Z,21Z,24Z)-dotriaconta-18,21,24-trienoyl]oxy-2-[(23Z,26Z,29Z,32Z,35Z,38Z,41Z)-tetratetraconta-23,26,29,32,35,38,41-heptaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[3-[(Z)-hexatriacont-25-enoyl]oxy-2-[(13Z,16Z,19Z,22Z,25Z,28Z,31Z,34Z,37Z)-tetraconta-13,16,19,22,25,28,31,34,37-nonaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[2-[(14Z,17Z,20Z,23Z,26Z,29Z)-dotriaconta-14,17,20,23,26,29-hexaenoyl]oxy-3-[(32Z,35Z,38Z,41Z)-tetratetraconta-32,35,38,41-tetraenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[3-hexatriacontanoyloxy-2-[(10Z,13Z,16Z,19Z,22Z,25Z,28Z,31Z,34Z,37Z)-tetraconta-10,13,16,19,22,25,28,31,34,37-decaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[3-[(20Z,23Z,26Z,29Z)-dotriaconta-20,23,26,29-tetraenoyl]oxy-2-[(26Z,29Z,32Z,35Z,38Z,41Z)-tetratetraconta-26,29,32,35,38,41-hexaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[2-[(18Z,21Z,24Z,27Z,30Z,33Z,36Z,39Z)-dotetraconta-18,21,24,27,30,33,36,39-octaenoyl]oxy-3-[(23Z,26Z)-tetratriaconta-23,26-dienoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[2-[(12Z,15Z,18Z,21Z,24Z,27Z,30Z,33Z)-hexatriaconta-12,15,18,21,24,27,30,33-octaenoyl]oxy-3-[(29Z,32Z)-tetraconta-29,32-dienoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[3-[(17Z,20Z,23Z,26Z,29Z)-dotriaconta-17,20,23,26,29-pentaenoyl]oxy-2-[(29Z,32Z,35Z,38Z,41Z)-tetratetraconta-29,32,35,38,41-pentaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[3-[(28Z,31Z,34Z)-dotetraconta-28,31,34-trienoyl]oxy-2-[(13Z,16Z,19Z,22Z,25Z,28Z,31Z)-tetratriaconta-13,16,19,22,25,28,31-heptaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[3-[(25Z,28Z)-hexatriaconta-25,28-dienoyl]oxy-2-[(16Z,19Z,22Z,25Z,28Z,31Z,34Z,37Z)-tetraconta-16,19,22,25,28,31,34,37-octaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[2-[(6Z,9Z,12Z,15Z,18Z,21Z,24Z,27Z,30Z,33Z)-hexatriaconta-6,9,12,15,18,21,24,27,30,33-decaenoyl]oxy-3-tetracontanoyloxypropoxy]methoxy]ethyl-trimethylazanium

2-[[3-heptatriacontanoyloxy-2-[(20Z,23Z,26Z,29Z,32Z,35Z)-octatriaconta-20,23,26,29,32,35-hexaenoyl]oxypropoxy]-hydroxyphosphoryl]oxyethyl-trimethylazanium

2-[carboxy-[2-[(11Z,14Z,17Z,20Z,23Z,26Z,29Z,32Z,35Z)-octatriaconta-11,14,17,20,23,26,29,32,35-nonaenoyl]oxy-3-[(Z)-octatriacont-27-enoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[2-[(20Z,23Z,26Z,29Z,32Z,35Z)-octatriaconta-20,23,26,29,32,35-hexaenoyl]oxy-3-[(26Z,29Z,32Z,35Z)-octatriaconta-26,29,32,35-tetraenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[2-[(21Z,24Z,27Z,30Z,33Z,36Z,39Z)-dotetraconta-21,24,27,30,33,36,39-heptaenoyl]oxy-3-[(20Z,23Z,26Z)-tetratriaconta-20,23,26-trienoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[2-[(11Z,14Z,17Z,20Z,23Z,26Z,29Z)-dotriaconta-11,14,17,20,23,26,29-heptaenoyl]oxy-3-[(30Z,33Z,36Z)-tetratetraconta-30,33,36-trienoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[2-[(15Z,18Z,21Z,24Z,27Z,30Z,33Z)-hexatriaconta-15,18,21,24,27,30,33-heptaenoyl]oxy-3-[(26Z,29Z,32Z)-tetraconta-26,29,32-trienoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[2-[(15Z,18Z,21Z,24Z,27Z,30Z,33Z,36Z,39Z)-dotetraconta-15,18,21,24,27,30,33,36,39-nonaenoyl]oxy-3-[(Z)-tetratriacont-23-enoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[[3-hentetracontanoyloxy-2-[(16Z,19Z,22Z,25Z,28Z,31Z)-tetratriaconta-16,19,22,25,28,31-hexaenoyl]oxypropoxy]-hydroxyphosphoryl]oxyethyl-trimethylazanium

2-[carboxy-[2-[(8Z,11Z,14Z,17Z,20Z,23Z,26Z,29Z,32Z,35Z)-octatriaconta-8,11,14,17,20,23,26,29,32,35-decaenoyl]oxy-3-octatriacontanoyloxypropoxy]methoxy]ethyl-trimethylazanium

2-[[2-[(14Z,17Z,20Z,23Z,26Z,29Z)-dotriaconta-14,17,20,23,26,29-hexaenoyl]oxy-3-tritetracontanoyloxypropoxy]-hydroxyphosphoryl]oxyethyl-trimethylazanium

2-[carboxy-[3-[(Z)-dotetracont-31-enoyl]oxy-2-[(7Z,10Z,13Z,16Z,19Z,22Z,25Z,28Z,31Z)-tetratriaconta-7,10,13,16,19,22,25,28,31-nonaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[3-[(27Z,30Z)-octatriaconta-27,30-dienoyl]oxy-2-[(14Z,17Z,20Z,23Z,26Z,29Z,32Z,35Z)-octatriaconta-14,17,20,23,26,29,32,35-octaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[3-[(22Z,25Z,28Z)-hexatriaconta-22,25,28-trienoyl]oxy-2-[(19Z,22Z,25Z,28Z,31Z,34Z,37Z)-tetraconta-19,22,25,28,31,34,37-heptaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[2-[(18Z,21Z,24Z,27Z,30Z,33Z)-hexatriaconta-18,21,24,27,30,33-hexaenoyl]oxy-3-[(28Z,31Z,34Z,37Z)-tetraconta-28,31,34,37-tetraenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[[3-hentriacontanoyloxy-2-[(26Z,29Z,32Z,35Z,38Z,41Z)-tetratetraconta-26,29,32,35,38,41-hexaenoyl]oxypropoxy]-hydroxyphosphoryl]oxyethyl-trimethylazanium

2-[carboxy-[2-[(8Z,11Z,14Z,17Z,20Z,23Z,26Z,29Z)-dotriaconta-8,11,14,17,20,23,26,29-octaenoyl]oxy-3-[(33Z,36Z)-tetratetraconta-33,36-dienoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[2-[(9Z,12Z,15Z,18Z,21Z,24Z,27Z,30Z,33Z)-hexatriaconta-9,12,15,18,21,24,27,30,33-nonaenoyl]oxy-3-[(Z)-tetracont-29-enoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[3-[(24Z,27Z,30Z,33Z)-hexatriaconta-24,27,30,33-tetraenoyl]oxy-2-[(22Z,25Z,28Z,31Z,34Z,37Z)-tetraconta-22,25,28,31,34,37-hexaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[2-[(12Z,15Z,18Z,21Z,24Z,27Z,30Z,33Z,36Z,39Z)-dotetraconta-12,15,18,21,24,27,30,33,36,39-decaenoyl]oxy-3-tetratriacontanoyloxypropoxy]methoxy]ethyl-trimethylazanium

2-[carboxy-[3-[(Z)-dotriacont-21-enoyl]oxy-2-[(17Z,20Z,23Z,26Z,29Z,32Z,35Z,38Z,41Z)-tetratetraconta-17,20,23,26,29,32,35,38,41-nonaenoyl]oxypropoxy]methoxy]ethyl-trimethylazanium

Isocomplestatin

A heterodetic cyclic peptide which is a atropisomer of complestatin. It is isolated from the culture broth of Streptomyces and has anti-HIV-1 activity.

(r)-({[(18r,21r,24r,27r,30s)-21,27-bis(3,5-dichloro-4-hydroxyphenyl)-18-[2-(3,5-dichloro-4-hydroxyphenyl)-2-oxoacetamido]-19,22,25,37-tetrahydroxy-29-methyl-28-oxo-2-oxa-14,20,23,26,29-pentaazahexacyclo[30.2.2.1³,⁷.0⁵,²⁴.0⁸,¹³.0¹²,¹⁶]heptatriaconta-1(34),3(37),4,6,8(13),9,11,15,19,22,25,32,35-tridecaen-30-yl](hydroxy)methylidene}amino)(4-hydroxyphenyl)acetic acid

(r)-({[(18r,21r,24r,27r,30s)-21,27-bis(3,5-dichloro-4-hydroxyphenyl)-18-[2-(3,5-dichloro-4-hydroxyphenyl)-2-oxoacetamido]-19,22,25,37-tetrahydroxy-29-methyl-28-oxo-2-oxa-14,20,23,26,29-pentaazahexacyclo[30.2.2.1³,⁷.0⁵,²⁴.0⁸,¹³.0¹²,¹⁶]heptatriaconta-1(34),3(37),4,6,8(13),9,11,15,19,22,25,32,35-tridecaen-30-yl](hydroxy)methylidene}amino)(4-hydroxyphenyl)acetic acid

({[20,26-bis(3,5-dichloro-4-hydroxyphenyl)-17-[2-(3,5-dichloro-4-hydroxyphenyl)-2-oxoacetamido]-18,21,24,37-tetrahydroxy-28-methyl-27-oxo-2-oxa-13,19,22,25,28-pentaazahexacyclo[29.2.2.1³,⁷.1⁸,¹².0⁵,²³.0¹¹,¹⁵]heptatriaconta-1(33),3(37),4,6,8,10,12(36),14,18,21,24,31,34-tridecaen-29-yl](hydroxy)methylidene}amino)(4-hydroxyphenyl)acetic acid

({[20,26-bis(3,5-dichloro-4-hydroxyphenyl)-17-[2-(3,5-dichloro-4-hydroxyphenyl)-2-oxoacetamido]-18,21,24,37-tetrahydroxy-28-methyl-27-oxo-2-oxa-13,19,22,25,28-pentaazahexacyclo[29.2.2.1³,⁷.1⁸,¹².0⁵,²³.0¹¹,¹⁵]heptatriaconta-1(33),3(37),4,6,8,10,12(36),14,18,21,24,31,34-tridecaen-29-yl](hydroxy)methylidene}amino)(4-hydroxyphenyl)acetic acid

(r)-({[(17r,20r,23r,26r,29s)-20,26-bis(3,5-dichloro-4-hydroxyphenyl)-17-[2-(3,5-dichloro-4-hydroxyphenyl)-2-oxoacetamido]-18,21,24,37-tetrahydroxy-28-methyl-27-oxo-2-oxa-13,19,22,25,28-pentaazahexacyclo[29.2.2.1³,⁷.1⁸,¹².0⁵,²³.0¹¹,¹⁵]heptatriaconta-1(33),3(37),4,6,8,10,12(36),14,18,21,24,31,34-tridecaen-29-yl](hydroxy)methylidene}amino)(4-hydroxyphenyl)acetic acid

(r)-({[(17r,20r,23r,26r,29s)-20,26-bis(3,5-dichloro-4-hydroxyphenyl)-17-[2-(3,5-dichloro-4-hydroxyphenyl)-2-oxoacetamido]-18,21,24,37-tetrahydroxy-28-methyl-27-oxo-2-oxa-13,19,22,25,28-pentaazahexacyclo[29.2.2.1³,⁷.1⁸,¹².0⁵,²³.0¹¹,¹⁵]heptatriaconta-1(33),3(37),4,6,8,10,12(36),14,18,21,24,31,34-tridecaen-29-yl](hydroxy)methylidene}amino)(4-hydroxyphenyl)acetic acid

({[(17r,20s,23r,26r,29s)-20,26-bis(3,5-dichloro-4-hydroxyphenyl)-17-[2-(3,5-dichloro-4-hydroxyphenyl)-2-oxoacetamido]-18,21,24,37-tetrahydroxy-28-methyl-27-oxo-2-oxa-13,19,22,25,28-pentaazahexacyclo[29.2.2.1³,⁷.1⁸,¹².0⁵,²³.0¹¹,¹⁵]heptatriaconta-1(33),3(37),4,6,8,10,12(36),14,18,21,24,31,34-tridecaen-29-yl](hydroxy)methylidene}amino)(4-hydroxyphenyl)acetic acid

({[(17r,20s,23r,26r,29s)-20,26-bis(3,5-dichloro-4-hydroxyphenyl)-17-[2-(3,5-dichloro-4-hydroxyphenyl)-2-oxoacetamido]-18,21,24,37-tetrahydroxy-28-methyl-27-oxo-2-oxa-13,19,22,25,28-pentaazahexacyclo[29.2.2.1³,⁷.1⁸,¹².0⁵,²³.0¹¹,¹⁵]heptatriaconta-1(33),3(37),4,6,8,10,12(36),14,18,21,24,31,34-tridecaen-29-yl](hydroxy)methylidene}amino)(4-hydroxyphenyl)acetic acid

(s)-({[(17r,20r,23r,26r,29s)-20,26-bis(3,5-dichloro-4-hydroxyphenyl)-17-[2-(3,5-dichloro-4-hydroxyphenyl)-2-oxoacetamido]-18,21,24,37-tetrahydroxy-28-methyl-27-oxo-2-oxa-13,19,22,25,28-pentaazahexacyclo[29.2.2.1³,⁷.1⁸,¹².0⁵,²³.0¹¹,¹⁵]heptatriaconta-1(33),3(37),4,6,8,10,12(36),14,18,21,24,31,34-tridecaen-29-yl](hydroxy)methylidene}amino)(4-hydroxyphenyl)acetic acid

(s)-({[(17r,20r,23r,26r,29s)-20,26-bis(3,5-dichloro-4-hydroxyphenyl)-17-[2-(3,5-dichloro-4-hydroxyphenyl)-2-oxoacetamido]-18,21,24,37-tetrahydroxy-28-methyl-27-oxo-2-oxa-13,19,22,25,28-pentaazahexacyclo[29.2.2.1³,⁷.1⁸,¹².0⁵,²³.0¹¹,¹⁵]heptatriaconta-1(33),3(37),4,6,8,10,12(36),14,18,21,24,31,34-tridecaen-29-yl](hydroxy)methylidene}amino)(4-hydroxyphenyl)acetic acid

({[21,27-bis(3,5-dichloro-4-hydroxyphenyl)-18-[2-(3,5-dichloro-4-hydroxyphenyl)-2-oxoacetamido]-19,22,25,37-tetrahydroxy-29-methyl-28-oxo-2-oxa-14,20,23,26,29-pentaazahexacyclo[30.2.2.1³,⁷.0⁵,²⁴.0⁸,¹³.0¹²,¹⁶]heptatriaconta-1(34),3(37),4,6,8(13),9,11,15,19,22,25,32,35-tridecaen-30-yl](hydroxy)methylidene}amino)(4-hydroxyphenyl)acetic acid

({[21,27-bis(3,5-dichloro-4-hydroxyphenyl)-18-[2-(3,5-dichloro-4-hydroxyphenyl)-2-oxoacetamido]-19,22,25,37-tetrahydroxy-29-methyl-28-oxo-2-oxa-14,20,23,26,29-pentaazahexacyclo[30.2.2.1³,⁷.0⁵,²⁴.0⁸,¹³.0¹²,¹⁶]heptatriaconta-1(34),3(37),4,6,8(13),9,11,15,19,22,25,32,35-tridecaen-30-yl](hydroxy)methylidene}amino)(4-hydroxyphenyl)acetic acid