7-Benzoyl-2,3,4a,6-tetraphenyl-4a,5,6,7-tetrahydro-1H-[1,3]oxazino[3,2-a][1,5]benzodiazepin-1-one

The title compound, C₄₃H₃₂N₂O₃, has a cis ring-fusion tricyclic structure, which is formed from a benzene ring, a seven-membered diazepine ring and a 1,3-oxazinone ring. The 1,5-diazepine ring has a slightly distorted boat-like conformation, whereas the 1,3-oxazinone ring adopts a half-chair conformation.

-1