Using O=C(O)/C=C/c1ccc2c(c1)sc1ncnc(Nc3ccc(OCc4cccc(F)c4)c(Cl)c3)c12 to produce O=C(O)CCc1ccc2c(c1)sc1ncnc(Nc3ccc(OCc4cccc(F)c4)c(Cl)c3)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.