(10aR)-2-Fluoro-10a-methyl-5,8,9,10,10a,11-hexahydro-5,6,7a,11-tetraazacyclohepta(1,2,3,4-def)cyclopenta(a)fluoren-4(7H)-one
(10ar)-2-fluoro-10a-methyl-5,8,9,10,10a,11-hexahydro-5,6,7a,11-tetraazacyclohepta(1,2,3,4-def)cyclopenta(a)fluoren-4(7h)-one