Using O=C(C=Cc1cccc2[nH]ccc12)c1ccccc1O, ClCC1CO1 to produce O=C(C=Cc1cccc2[nH]ccc12)c1ccccc1OCC1CO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.