7-(((2S)-2-thio-1-oxo-3-methylpropyl)amino)-1,2,3,4,6,7,8,12b-octahydro-6-oxo-(4S,7S,12bR)-pyrido(2,1-a)(2)benzazepin-4-carboxyacid
7-(((2s)-2-thio-1-oxo-3-methylpropyl)amino)-1,2,3,4,6,7,8,12b-octahydro-6-oxo-(4s,7s,12br)-pyrido(2,1-a)(2)benzazepin-4-carboxyacid