Using CCS(=O)(=O)c1ccc(OCC2CC2(F)F)c(-c2cn(C)c(=O)c3[nH]c(C(=O)O)cc23)c1, NCC(F)(F)F to produce CCS(=O)(=O)c1ccc(OCC2CC2(F)F)c(-c2cn(C)c(=O)c3[nH]c(C(=O)NCC(F)(F)F)cc23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.