Using CCOC(=O)CN(C(=O)CCc1cccc(F)c1F)c1ccsc1C(N)=O to produce CCOC(=O)Cn1c(CCc2cccc(F)c2F)nc(=O)c2sccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.