Using O=C(CCl)c1ccccc1, CN(C)C(=O)Nc1ccc(O)c(Cl)c1 to produce CN(C)C(=O)Nc1ccc(OCC(=O)c2ccccc2)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.