(S)-2-(3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-oxo-3,4-dihydrobenzo[b][1,4]oxazepin-5(2H)-yl)acetic acid 1g

(S)-2-(3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-oxo-3,4-dihydrobenzo[b][1,4]oxazepin-5(2H)-yl)acetic acid 1g