Avanafil Dimer Impurity

Chemical Name: N-(3-chloro-4-methoxybenzyl)-4-((3-chloro-4-methoxybenzyl)amino)-2-((S)-2-(hydroxymethyl)pyrrolidin-1-yl)-N-(2-((S)-2-(hydroxymethyl)pyrrolidin-1-yl)-5-((pyrimidin-2-ylmethyl)carbamoyl)pyrimidin-4-yl)pyrimidine-5-carboxamide