Synonyms: ZK 91587;AC1L3TTS;SH-D515;AR-1J6423;ZK-91587;3'H-Cyclopropa(15,16)pregna-4,15-diene-7,21-dicarboxylic acid, 15,16-dihydro-17-hydroxy-3-oxo-, gamma-lactone, methyl ester, (7alpha,15alpha,16alpha,17alpha)-;7alpha-Methoxycarbonyl-15beta,16beta-methylene-3-oxo-17alpha-pregn-4-ene-21,17-carbolactone;methyl(4ar,4bs,6as,7s,7as,8as,8bs,8cr,9r)-4a,6a-dimethyl-2,5'-dioxo-2,4,4',4a,4b,5,5',6,6a,7a,8,8a,8b,8c,9,10-hexadecahydro-3h,3'h-spiro[cyclopropa[4,5]cyclopenta[1,2-a]phenanthrene-7,2'-furan]-9-carboxylate