3,4-Epoxy-1,2,3,4-tetrahydrobenzo(rst)pentaphene 3,4-Epoxy-1,2,3,4-tetrahydrodibenzo(a,i)pyrene 78859-22-0 BENZO(rst)PENTAPHENE, 1,2,3,4-TETRAHYDRO-3,4-EPOXY-