Using CC(C)=CCCC(C)=CCCC(C)=CCCC(C)=CC(=O)N1CCOCC1 to produce CC(C)CCCC(C)CCCC(C)CCCC(C)CC(=O)N1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.