839720-47-7

2,5,9,14,18-Pentaazanonadecanedioic acid,9,14-bis[(1,1-dimethylethoxy)carbonyl]-3-(4-hydroxyphenyl)-4-oxo-,18-(1,1-dimethylethyl) 1-(9H-fluoren-9-ylmethyl) ester, (3R)-