Using O=C(O)c1ccc2ccccc2c1, NCC(=O)N(c1ccccc1)c1ccccc1 to produce O=C(NCC(=O)N(c1ccccc1)c1ccccc1)c1ccc2ccccc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.