Synonyms: (2R,3R,4bS,6aR,7S,7dS,8S,9aS,14bS,14cR,16aS)-14b,14c,17,17-tetramethyl-2-(1-methylethenyl)-10-methylidene-2,3,5,6,6a,7,7d,8,9,9a,10,11,14,14b,14c,15,16,16a-octadecahydro-4bH-7,8-(epoxymethano)chromeno[5',6':6,7]indeno[1,2-b]cyclobuta[5,6]benzo[1,2-e]indol