Using CI, CC(C)(C)OC(=O)NCCn1c(=O)[nH]c2ccccc21 to produce Cn1c(=O)n(CCNC(=O)OC(C)(C)C)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.