Using BrCc1ccccc1, O=c1[nH]c(=O)n(C2CC2)c2nc[nH]c12 to produce O=c1[nH]c(=O)n(C2CC2)c2ncn(Cc3ccccc3)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.