Avanafil Dimer Ester Impurity

Chemical Name: (1-(4-((3-chloro-4-methoxybenzyl)amino)-5-((pyrimidin-2-yl methyl)carbamoyl)pyrimidin-2-yl)pyrrolidin-2-yl)methyl 4-((3-chloro-4-methoxy benzyl)amino)-2-(2-(hydroxymethyl)pyrrolidin-yl)pyrimidine-5-carboxylate

Smile: O=C(C1=CN=C(N2C(CO)CCC2)N=C1NCC3=CC=C(OC)C(Cl)=C3)OCC4N(C5=NC=C(C(NCC6=NC=CC=N6)=O)C(NCC7=CC=C(OC)C(Cl)=C7)=N5)CCC4