6-(4-Chlorophenyl)-3-methyl-2,4a-diphenyl-5,6-dihydro-1H,4aH-1,3-oxazino[2,3-d][1,5]benzothiazepin-1-one

The title compound, C₃₁H₂₄ClNO₂S, has a cis-ring-fusion tricyclic structure, which is formed from a benzene ring, a seven-membered heterocyclic thiazepine ring and a 1,3-oxazinone ring. The 1,5-thiazepine ring has a slightly distorted boat-like conformation, whereas the 1,3-oxazinone ring adopts a half-chair conformation.

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