Velpatasvir Impurity 23

Chemical Name: Methyl [(2S)-1-[(2S,5S)-2-[9-[2-[(2S,4S)-1-[(2R)-2-[(methoxycarbonyl)amino]-2-phenylacetyl]-4-(methoxymethyl)pyrrolidin-2-yl]-1H-imidazol-5-yl]-11-ethoxy-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-2-yl]-5-methylpyrrolidin-1-yl]-3-methyl-1-oxobutan-2-yl]carbamate

Smile: O=C(OC)N[C@@H](C(C)C)C(N1[C@H](C2=NC3=CC=C4C=C5C(OC(OCC)C6=C5C=CC(C7=CN=C(C8N(C([C@@H](NC(OC)=O)C9=CC=CC=C9)=O)C[C@@H](COC)C8)N7)=C6)=CC4=C3N2)CC[C@@H]1C)=O