Using CC1(CNC(=O)C(F)(F)F)CN(c2c(F)cc3c(=O)c(C(=O)O)cn(C4CC4)c3c2F)C1 to produce CC1(CN)CN(c2c(F)cc3c(=O)c(C(=O)O)cn(C4CC4)c3c2F)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.