136286-41-4

ESTRA-11,15-DIENE-10,14-DICARBOXYLIC ACID,3-(ACETYLOXY)-6-HYDROXY-15-METHOXY-4,- 4,8,12,16-PENTAMETHYL-17-OXO-,?LACTONE,METHYL ESTER,(3R,5R,6?14?-