(S)-N-((S)-1-amino-1-oxopropan-2-yl)-1-((2S,5S,8R,11S,14S,17R,20R,23R,26R)-23-(4-chlorobenzyl)-2-(3-guanidinopropyl)-11-(4-hydroxybenzyl)-14-(hydroxymethyl)-5-isobutyl-26-(naphthalen-2-ylmethyl)-4,7,10,13,16,19,22,25,28-nonaoxo-17,20-bis(pyridin-3-ylmethyl)-8-(3-ureidopropyl)-3,6,9,12,15,18,21,24,27-nonaazanonacosan-1-oyl)pyrrolidine-2-carboxamide,(S)-N-((S)-1-amino-1-oxopropan-2-yl)-1-((2S,5S,8R,11S,14S,17R,20R,23R,26R)-23-(4-chlorobenzyl)-2-(3-guanidinopropyl)-11-(4-hydroxybenzyl)-14-(hydroxymethyl)-5-isobutyl-26-(naphthalen-2-ylmethyl)-4,7,10,13,16,19,22,25,28-nonaoxo-17,20-bis(pyridin-3-ylmethyl)-8-(3-ureidopropyl)-3,6,9,12,15,18,21,24,27-nonaazanonacosan-1-oyl)pyrrolidine-2-carboxamide,Cetrorelix Impurity