Using COc1ccc(CN(c2nccs2)S(=O)(=O)c2ccc3c(c2)OCCN3c2ccc(N)cc2Br)cc1, C[Si](C)(C)N=[N+]=[N-] to produce COc1ccc(CN(c2nccs2)S(=O)(=O)c2ccc3c(c2)OCCN3c2ccc(N=[N+]=[N-])cc2Br)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.