Using O=C(O)CNc1ccc2ccccc2c1, CC(C)(C)OC(=O)OC(C)(C)C to produce CC(C)(C)OC(=O)N(CC(=O)O)c1ccc2ccccc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.