EPOXYDIHYDROMETHYLCHOLANTHRENE

methylcholanthrene-11,12-epoxide

1,2,11,12-Tetrahydro-11,12-epoxy-3-methylbenz[j]aceanthrylene

1a,10,11,11c-Tetrahydro-9-methylbenz[7,8]aceanthryleno[9,10-b]oxirene