921223-23-6 (2r,3r)-2-(3,4-dihydroxyphenyl)-3,7-dihydroxy-5-[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-2,3-dihydrochromen-4-one 52988-50-8 (3R,5'R,5aR,7R,8S,8aS,9aR)-8a-hydroxy-3-(hydroxymethyl)-2,4',4',5'-tetramethyl-1,3',4-trioxodecahydro-3'H,8H-spiro[3,9a-epidithiocyclopenta[4,5]pyrrolo[1,2-a]pyrazine-7,2'-furan]-8-yl acetate