Using COC(=O)c1ccc(O)cc1NC(=O)c1ccccc1, OCCCc1ccccc1 to produce COC(=O)c1ccc(OCCCc2ccccc2)cc1NC(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.