(-)-(1S,2R)-1,2-Epoxy-1,2,3,4-tetrahydrodibenz(c,h)acridine (1aR)-1a,2,3,13c-Tetrahydrobenz(c)oxireno(5,6)benz(1,2-h)acridine 93781-04-5 Benz(c)oxireno(5,6)benz(1,2-h)acridine, 1a,2,3,13c-tetrahydro-, (1aR)-