Using CNC(=O)NC(=O)C(CC1CCCC1OC1CCCCO1)c1ccc(Cl)c(Cl)c1 to produce CNC(=O)NC(=O)C(CC1CCCC1O)c1ccc(Cl)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.