Using O=C(O)c1[nH]c2ccc(/C=C/c3ccccc3)cc2c1CCCOc1cccc2ccccc12 to produce O=C(O)c1[nH]c2ccc(CCc3ccccc3)cc2c1CCCOc1cccc2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.