Using OCC(O)CCl, CCC(=C(c1ccccc1)c1ccc(O)cc1)C1CCCC1 to produce CCC(=C(c1ccccc1)c1ccc(OCC(O)CO)cc1)C1CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.