Using COc1ccc2c3c(c(=O)oc2c1)CNCC3, O=[N+]([O-])c1ccc(CBr)cc1 to produce COc1ccc2c3c(c(=O)oc2c1)CN(Cc1ccc([N+](=O)[O-])cc1)CC3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.