Synonyms: AC1O54LA;4614-52-2;methyl (4aS,6aS,11aS)-8,9,11b-trimethyl-6a,11a-dihydro-4aH-naphtho[2,1-f][1]benzofuran-4-carboxylate;Methyl 1,2,3,4abeta,5,6,6aalpha,7,11,11abeta,11b-dodecahydro-4alpha,7beta,11balpha-trimethylphenanthro(3,2-b)furan-4-carboxylate;Phenanthro(3,2-b)furan-4-carboxylic acid, 1,2,3,4abeta,5,6,6aalpha,7,11,11abeta,11b-dodecahydro-4alpha,7beta,11balpha-trimethyl-, methyl ester