Using CC(C)(C)OC(=O)NC1CN(C(=O)C(C)(C)C)c2ccccc2N(CC(=O)OCc2ccccc2)C1=O to produce CC(C)(C)OC(=O)NC1CN(C(=O)C(C)(C)C)c2ccccc2N(CC(=O)O)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.