Using COC(=O)c1ccc2c(n1)CCNC2, O=C=NCc1ccccc1 to produce COC(=O)c1ccc2c(n1)CCN(C(=O)NCc1ccccc1)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.