Using O=C(Cl)CCl, COc1cc2ncnc(Nc3cccc(Cl)c3F)c2cc1OC1CCCNC1 to produce COc1cc2ncnc(Nc3cccc(Cl)c3F)c2cc1OC1CCCN(C(=O)CCl)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.