(4R,4aR,5S,6R,9S,12S,12aR)-9-(acetyloxy)-4-isopropyl-6-methyl-1,10-bis(methylene)tetradecahydro-5,12-epoxybenzo[10]annulen-6-yl rel-butanoate InChI=1/C26H40O5/c1-8-9-22(28)31-26(7)13-12-20(29-18(6)27)17(5)14-21-23-16(4)10-11-19(15(2)3)24(23)25(26)30-21/h15,19-21,23-25H,4-5,8-14H2,1-3,6-7H3/t19-,20+,21+,23-,24-,25+,26-/m1/s butanoic acid, (4R,4aR,5S,6R,9S,12S,12aR)-9-(acetyloxy)tetradecahydro-6-methyl-1,10-bis(methylene)-4-(1-methylethyl)-5,12-epoxybenzocyclodecen-6-yl ester