Provided is a compound having a structure selected from the group consisting of: which are intermediates in the preparation of Carbamic acid, N,N-[tricyclo[8.2.2.24,7]hexadeca-4,6,10,12,13,15-hexaene-5,11-diyl bis [1H-benzimidazole-6,2-diyl[(2S,3aS,7aS)-octahydro-1H-indole-2,1-diyl][(1S)-1-(1-methylethyl)-2-oxo-2,1-ethane diyl]]] bis-, C,C-dimethyl ester, which is a Hepatitis C virus NS5a (HCV NS5a) protease replication inhibitor