IUPAC:6-[(1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-carboxy-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-1H,2H,3H,3aH,4H,5H,5aH,5bH,6H,7H,7aH,8H,11H,11aH,11bH,12H,13H,13aH,13bH-cyclopenta[a]chrysen-9-yl]spiro[3.3]hept-5-ene-2,2-dicarboxylic acid
IUPAC:6-[(1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-carboxy-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-1H,2H,3H,3aH,4H,5H,5aH,5bH,6H,7H,7aH,8H,11H,11aH,11bH,12H,13H,13aH,13bH-cyclopenta[a]chrysen-9-yl]spiro[3.3]hept-5-ene-2,2-dicarboxylic acid