(+-)-1,2-Epoxy-1,2,3,4-tetrahydrodibenz(c,h)acridine (+-)-1a,2,3,13c-Tetrahydrobenz(c)oxireno(5,6)benz(1,2-h)acridine Benz(c)oxireno(5,6)benz(1,2-h)acridine, 1a,2,3,13c-tetrahydro-, (+-)- DM5322000