Using CCc1cccc2c3c([nH]c12)C(CC)(CCO)OCC3, O=C(Cl)C(=O)Cl to produce CCc1cccc2c3c([nH]c12)C(CC)(CC(O)O)OCC3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.