Using CC1(CNC(=O)C(F)(F)F)CN(c2cc3c(cc2F)c(=O)c(C(=O)O)cn3C2CC2)C1 to produce CC1(CN)CN(c2cc3c(cc2F)c(=O)c(C(=O)O)cn3C2CC2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.