Using CCCCCC, C=CCc1cccc(Oc2cc(CC=C)cc(O)c2O)c1 to produce C/C=C/c1ccc(Oc2cc(/C=C/C)cc(O)c2O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.