Using CCOC(=O)CC(=O)c1cccc2c1nc(CCc1ccccc1)n2C to produce CCOC(=O)CC(O)c1cccc2c1nc(CCc1ccccc1)n2C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.