51773-74-1 (1S,3Z,5Z,7S,9Z,11E,13S,15R)-13-hydroxy-2-{[(2R)-2-hydroxypropanoyl]amino}-1,4,10,19-tetramethyl-17,18-dioxo-16-oxabicyclo[13.2.2]nonadeca-3,5,9,11-tetraen-7-yl acetate 51733-45-0 (1S,2R,3Z,5E,7S,9Z,11Z,13S,15R,19R)-7-hydroxy-1,4,10,19-tetramethyl-17,18-dioxo-2-[(2-oxopropanoyl)amino]-16-oxabicyclo[13.2.2]nonadeca-3,5,9,11-tetraen-13-yl pentanoate 133587-15-2 BUTANOIC ACID3-METHYL-,(1R,4S,5S,6S,8R)-4- (ACETYLOXY)-8-[(1R,3AR,8AS)-DECAHYDRO-1,4,4- TRIMETHYL-8-METHYLENE-1-AZULENYL]-2,7-DIOXABICYCLO[ 3.2.1]OCT-6-YL ESTER,REL-(-)-