Leuprolide Acetate Impurity A

Chemical Name: (S)-N-ethyl-1-(((S)-5-oxopyrrolidine-2-carbonyl)-L-histidyl-L-tryptophyl-D-seryl-L-tyrosyl-D-leucyl-L-leucyl-L-arginyl)pyrrolidine-2-carboxamide

Smile: O=C(N1)CC[C@H]1C(N[C@@](C(N[C@](CC2=CNC3=C2C=CC=C3)([H])C(N[C@](CO)([H])C(N[C@@]([H])(CC4=CC=C(O)C=C4)C(N[C@@](CC(C)C)([H])C(N[C@@]([H])(CC(C)C)C(N[C@](CCCNC(NC(C(O)C)=O)=N)([H])C(N5[C@@](C(NCC)=O)([H])CCC5)=O)=O)=O)=O)=O)=O)=O)([H])CC6=CN=CN6)=O