Using CCCCCC1CCC(C=Cc2ccc(C3CCC(C(=O)OC)CC3)cc2)CC1 to produce CCCCCC1CCC(CCc2ccc(C3CCC(C(=O)OC)CC3)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.