1H-Benzo[a]fluorene-7-carboxylic acid, 2,3,4,4a,5,6,6a,11,11a,11b-decahydro-9,10-dihydroxy-4,4,6a,11b-tetramethyl-, methyl ester, (4aS,6aR,11aR,11bS)- 287974-44-1