Leuprolide Acetate EP Impurity G 

Chemical Name: (D-Tyr5)-Leuprolide ; (S)-N-ethyl-1-(((S)-5-oxopyrrolidine-2-carbonyl)-L-histidyl-L-tryptophyl-L-seryl-D-tyrosyl-D-leucyl-L-leucyl-L-arginyl)pyrrolidine-2-carboxamide 2,2,2-trifluoroacetate

Smile: O=C(N[C@@H](CO)C(N[C@@H](C(N[C@H](CC(C)C)C(N[C@@H](CC(C)C)C(N[C@@H](CCCNC(N)=N)C(N(CCC1)[C@@H]1C(NCC)=O)=O)=O)=O)=O)CC2=CC=C(O)C=C2)=O)[C@@H](NC([C@@H](NC([C@@H](N3)CCC3=O)=O)CC4=CNC=N4)=O)CC5=CNC6=C5C=CC=C6.FC(F)(F)C(O)=O