IUPAC:methyl (1R,5aR,5bR,10E,11aR)-10-[(4-bromophenyl)methylidene]-5a,5b,8,8,11a-pentamethyl-9-oxo-1-(prop-1-en-2-yl)-icosahydro-1H-cyclopenta[a]chrysene-3a-carboxylate
IUPAC:methyl (1R,5aR,5bR,10E,11aR)-10-[(4-bromophenyl)methylidene]-5a,5b,8,8,11a-pentamethyl-9-oxo-1-(prop-1-en-2-yl)-icosahydro-1H-cyclopenta[a]chrysene-3a-carboxylate