Using O=C(O)c1cccc(Oc2ccccc2)c1, CCOC(=O)C1Cc2ccccc2CN1 to produce CCOC(=O)C1Cc2ccccc2CN1C(=O)c1cccc(Oc2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.