Using COc1ccccc1CCN(CCCCC(=O)c1ccc2c(c1)CCN2C(C)=O)C(=O)OC(C)(C)C to produce COc1ccccc1CCN(CCCCC(=O)c1ccc2c(c1)CCN2)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.