Acetonitrile → 1-[3-(Benzoylthio)-3-(benzo[b]thien-3-ylcarbonyl)propionyl]-L-proline

Reaction equation

Br[CH:2]([C:14]([C:16]1[C:17]2[CH:24]=[CH:23][CH:22]=[CH:21][C:18]=2[S:19][CH:20]=1)=[O:15])[CH2:3][C:4]([N:6]1[CH2:13][CH2:12][CH2:11][C@H:7]1[C:8]([OH:10])=[O:9])=[O:5].C(#N)C.C[O-].[Na+].[C:31]([OH:39])(=[S:38])[C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1>C(O)(=O)C>[C:31]([S:38][CH:2]([C:14]([C:16]1[C:17]2[CH:24]=[CH:23][CH:22]=[CH:21][C:18]=2[S:19][CH:20]=1)=[O:15])[CH2:3][C:4]([N:6]1[CH2:13][CH2:12][CH2:11][C@H:7]1[C:8]([OH:10])=[O:9])=[O:5])(=[O:39])[C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1