Using COc1ccccc1OCCN(Cc1ccccc1)C(=O)CCc1c[nH]c2ccccc12 to produce COc1ccccc1OCCN(CCCc1c[nH]c2ccccc12)Cc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.