Using CS(=O)c1nc2c(c(=O)n1-c1ccc(OCC(F)(F)F)cc1)CCC(=O)N2, OCC(F)(F)F to produce O=C1CCc2c(nc(OCC(F)(F)F)n(-c3ccc(OCC(F)(F)F)cc3)c2=O)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.