[(S)-1-((S)-2-{(S)-2-[(1R,2R)-1-Methoxy-2-((S)-2-phenyl-1-thiazol-2-yl-ethylcarbamoyl)-propyl]-pyrrolidine-1-carbonyl}-pyrrolidine-1-carbonyl)-2-methyl-propyl]-methyl-carbamic acid 9H-fluoren-9-ylmethyl ester