Bromine → 1-[3-Acetylthio-3-(5-chloro-3-thenoyl)propionyl]-L-proline

Reaction equation

[Cl:1][C:2]1[S:6][CH:5]=[C:4]([C:7]([CH2:9][CH2:10][C:11]([OH:13])=O)=[O:8])[CH:3]=1.[NH:14]1[CH2:21][CH2:20][CH2:19][C@H:15]1[C:16]([OH:18])=[O:17].C(N1C=CN=C1)(N1C=CN=C1)=O.BrBr.[C:36]([O-:39])(=[S:38])[CH3:37].[Na+]>C(O)(=O)C.C(#N)C>[C:36]([S:38][CH:9]([C:7](=[O:8])[C:4]1[CH:3]=[C:2]([Cl:1])[S:6][CH:5]=1)[CH2:10][C:11]([N:14]1[CH2:21][CH2:20][CH2:19][C@H:15]1[C:16]([OH:18])=[O:17])=[O:13])(=[O:39])[CH3:37]