Sovateltide Impurity 4

(2S,5S,8S,11S,14S,17S,20S,23S,26S,29S,32S,35S,38S,41S) -17- ((1H-imidazol-5-yl) methyl) -23-benzyl-5,8-di ((S) -sec-butyl) -35,38-bis (2-carboxyethyl) -11,41-bis (carboxymethyl) -2- (2- (2-formamidophenyl) -2-oxoethyl) -26- (4-hydroxybenzyl) -14-isobutyl-29-isopropyl-20,32-dimethyl-4,7,10,13,16,19,22,25,28,31,34,37,40,43-tetradecaoxo-3,6,9,12,15,18,21,24,27,30,33,36,39,42-tetradecaazahexatetracontanedioic acid