Using CC(C)(C)OC(=O)N1CCC(=O)CC1=O, CCOC(=O)C(N)C(=O)C(F)(F)F to produce CCOC(=O)c1[nH]c2c(c1C(F)(F)F)C(=O)NCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.