Using COC(=O)c1cc2c(o1)CNCC2, O=C(O)c1ccc(C(=O)c2ccccc2)cc1 to produce COC(=O)c1cc2c(o1)CN(C(=O)c1ccc(C(=O)c3ccccc3)cc1)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.