Dichloromethane → 1,1'-(Diazomethylene)bis(benzene)

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[C:25]([O:26][OH:27])(=[O:28])[CH3:29].[CH3:17][N:18]([CH3:19])[C:20]([N:21]([CH3:22])[CH3:23])=[NH:24].[Cl:30][CH2:31][Cl:32].[I:16].[c:1]1([C:7]([c:8]2[cH:9][cH:10][cH:11][cH:12][cH:13]2)=[N:14][NH2:15])[cH:2][cH:3][cH:4][cH:5][cH:6]1>>[c:1]1([C:7]([c:8]2[cH:9][cH:10][cH:11][cH:12][cH:13]2)=[N+:14]=[N-:15])[cH:2][cH:3][cH:4][cH:5][cH:6]1