Using COC(=O)c1cc2c(cc1C)OC(C)(C)C(=O)N2CCCC(=O)OC(C)(C)C to produce COC(=O)c1cc2c(cc1C)OC(C)(C)C(=O)N2CCCC(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.