Using CC(C)(C)OC(=O)N1CCC[C@H]1C(=O)O, NNC(=O)OCc1ccccc1 to produce CC(C)(C)OC(=O)N1CCC[C@H]1C(=O)NNC(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.