Diolepoxide 2

(+)-(R,S,S,R)-Benzo[a]pyrene diol epoxide

(7R,8S,9S,10R)-7,8,9,10-Tetrahydro-7,8-dihydroxy-9,10-epoxybenzo[a]pyrene

(7R,8S,8aS,9aR)-7,8,8a,9a-Tetrahydrobenzo[10,11]chryseno[3,4-b]oxirene-7,8-diol