Using COc1cccc(CC2CCCCC2c2nc(-c3ccccc3)c(-c3ccccc3)o2)c1 to produce Oc1cccc(CC2CCCCC2c2nc(-c3ccccc3)c(-c3ccccc3)o2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.