1,4-Benzoxazepine-7-acetic acid, 2,3,4,5-tetrahydro-alpha-methyl-5-oxo-, methyl ester 72766-03-1 BRN 1124847 Methyl 2,3,4,5-tetrahydro-alpha-methyl-5-oxo-1,4-benzoxazepine-7-acetate Methyl 2,3-dihydro-1,4-benzoxazepin-5(4H)-one-7-alpha-methylacetate