Using CSc1ncc2c(=O)n(-c3cc(NC(=O)c4cccc(C(F)(F)F)c4)ccc3C)c(=O)[nH]c2n1, CI to produce CSc1ncc2c(=O)n(-c3cc(NC(=O)c4cccc(C(F)(F)F)c4)ccc3C)c(=O)n(C)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.