1,4-Benzoxazepine-7-acetic acid, 2,3,4,5-tetrahydro-alpha-ethyl-5-oxo-, methyl ester 72766-05-3 BRN 1130019 Methyl 2,3,4,5-tetrahydro-alpha-ethyl-5-oxo-1,4-benzoxazepine-7-acetate