Chemical Formula: C39H42O19S

6-[2-(4a-{[9,10a-dihydroxy-3-(2-methoxy-2-oxoethyl)-1-methyl-5,10-dioxo-1h,3h,4h-naphtho[2,3-c]pyran-4a-yl]sulfanyl}-9,10a-dihydroxy-1-methyl-5,10-dioxo-1h,3h,4h-naphtho[2,3-c]pyran-3-yl)ethoxy]-3,4,5-trihydroxyoxane-2-carboxylic acid

(2r,3r,4r,5s,6s)-6-{2-[(1s,3s,4as,10ar)-4a-{[(1s,3s,4as,10ar)-9,10a-dihydroxy-3-(2-methoxy-2-oxoethyl)-1-methyl-5,10-dioxo-1h,3h,4h-naphtho[2,3-c]pyran-4a-yl]sulfanyl}-9,10a-dihydroxy-1-methyl-5,10-dioxo-1h,3h,4h-naphtho[2,3-c]pyran-3-yl]ethoxy}-3,4,5-trihydroxyoxane-2-carboxylic acid