7,8-(Epoxymethano)-4bH-1-benzopyrano(5',6':6,7)indeno(1,2-b)cyclobuta(5,6)benz(5,6)benz(1,2-e)indole-3,4b-diol, 2,3,5,6,6a,7,7d,8,9,9a,10,11,14,14b,14c,15,16,16a-octadecahydro-14b,14c,17,17-tetramethyl-10-methylene-2-(1-methylethenyl)-, (2R,3R,4bS,6aR,7S,7dS,8S,9aS,14bS,14cR,16aS)- 78213-64-6