(S)-2,5-Dioxopyrrolidin-1-yl 5-benzyl-18-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-4,7,10,13-tetraoxo-3,6,9,12-tetraazaoctadecan-1-oate 50mg

(S)-2,5-Dioxopyrrolidin-1-yl 5-benzyl-18-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-4,7,10,13-tetraoxo-3,6,9,12-tetraazaoctadecan-1-oate 50mg