Using CCS, O=C1c2ccccc2COc2ccc(OCc3ccc4cc(F)c(Cl)cc4n3)cc21 to produce CCSc1cc2ccc(COc3ccc4c(c3)C(=O)c3ccccc3CO4)nc2cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.