7-(1-carboxy-3-phenylpropyl)amino-3,4,6,7,8,12b-hexahydro-6-oxo-1H-(1,4)thiazino(3,4-a)-2-benzazepine-4-carboxylic acid
7-(1-carboxy-3-phenylpropyl)amino-3,4,6,7,8,12b-hexahydro-6-oxo-1h-(1,4)thiazino(3,4-a)-2-benzazepine-4-carboxylic acid