A pharmaceutically acceptable salt of methyl [(1S)-2methyl-1-({(2S)-2-[4-(4'-{2-[(8S)-7-((2S)-3methyl-2-{[(methyloxy)carbonyl]amino} butanoyl)- 1,4-dioxa-7-azaspiro[4.4]non-8-yl]1 H-imidazol-4-yl}-4-biphenylyl)-1 H-imidazol-2yl]-1-pyrroli- dinyl}carbonyl)propyl]carbamate".

Abstract

This invention relates to a pharmaceutically acceptable salt of compound of Formula; wherein said salt is either a di-HCI salt or a sulfate salt and pharmaceutical composition comprising the salt useful for the treatment of HCV infection.