(E)-1,2,3,4a,5,6,7,11b-Octahydrobenzo(3,4)cyclohept(1,2-b)(1,4)oxazine 105124-53-6 Benzo(3,4)cyclohept(1,2-b)(1,4)oxazine, 1,2,3,4a,5,6,7,11b-octahydro-, (E)-