(3aR,3R,6aR,9S,10aR,12aS,12bS)-3a,10,10,12b-tetramethyl-3-[(2R)-6-methyl-5-methylidenehept-2-yl]-2,3,3a,4,5,7,8,9,10,10a,11,12,12a,12b-tetradecahydro-1H-cyclopenta[1,2-i]cyclopropa[1,2-e]phenanthren-9-yl (2E)-3-(4-hydroxy-3-methoxyphenyl)prop-2-enoate