Using CCC[C@]12CCC3=C(CCc4cc(OC)ccc43)C1=CCC21OCCO1 to produce CCC[C@]12CCC3=C(CCc4cc(OC)ccc43)[C@@H]1CCC21OCCO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.