Using CCCCCC1(C=O)CCC(c2ccc(CC[C@H]3CC[C@H](CCCCC)CC3)cc2)CC1 to produce CCCCCC1(C)CCC(c2ccc(CC[C@H]3CC[C@H](CCCCC)CC3)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.