Daclatasvir Impurity 7

1,1''-(2S,2''S)-2,2''-(5,5''-([1,1''-Biphenyl]-4,4''-diyl)bis[1H-imidazole-5,2-diyl))bis(pyrrolidine-2,1-diyl))diethanone is derived from 5,5''-[1,1''-Biphenyl]-4,4''-diylbis[2-(2S)-2-pyrrolidinyl-1H-imidazole] Hydrochloride (B397775), which is the derivative of Daclatasvir (D101500) that inhibits the HCV protein NS5A, and thus can be used a drug candidate for the treatment of hepatitis C (HCV).