(+-)-2,3,3a,4,5,6-Hexahydro-3,6,6-trimethyl-3,7a-diazacyclohepta(jk)fluoren-7(1H)-one 3,7a-Diazacyclohepta(jk)fluoren-7(1H)-one, 2,3,3a,4,5,6-hexahydro-3,6,6-trimethyl-, (+-)- 87255-57-0