Using COc1cc(CCC(=O)CC(=O)c2ccccc2)ccc1OCC(N)C(=O)OC(C)(C)C to produce COc1cc(CCC(=O)CC(=O)c2ccccc2)ccc1OCCN, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.