1a,2,3,11b-Tetrahydro-4,11-dimethylbenz(7,8)anthra(1,2-b)oxirene-2,3-diol 7,12-Dimethylbenz(a)anthracene-8,9-diol-10,11-epoxide 72690-00-7 Benz(7,8)anthra(1,2-b)oxirene-2,3-diol, 1a,2,3,11b-tetrahydro-4,11-dimethyl-