Using CCOC(=O)c1sc(NC)nc1C(C)c1ccc(-c2ccc(F)cc2)c(F)c1 to produce CNc1nc(C(C)c2ccc(-c3ccc(F)cc3)c(F)c2)c(C(=O)O)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.