Using Cc1cccnc1CN(CCCN)Cc1ncccc1C, O=C(O)c1ccc(O)nc1 to produce Cc1cccnc1CN(CCCNC(=O)c1ccc(O)nc1)Cc1ncccc1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.