Octreotide Impurity 45

2- (2- ((2R,3R) -2- ((4R,7S,10S,13R,16S,19R) -13- ((1H-indol-3-yl) methyl) -19- ((R) -2-amino-3-phenylpropanamido) -10- (4-aminobutyl) -16-benzyl-7- ((R) -1-hydroxyethyl) -6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloicosane-4-carboxamido) -3-hydroxybutoxy) -2-oxoethoxy) -2-oxoethyl 2-hydroxyacetate