Using CC(C)(C)OC(=O)N(C(=O)OC(C)(C)C)c1nn2cccnc2c1C(=O)[O-] to produce CC(C)(C)OC(=O)Nc1nn2cccnc2c1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.