Using CCCCCC(C)C(C)c1cc(OC(C)=O)c2c(c1)OC1=C(CCCC1)C2C to produce CCCCCC(C)C(C)c1cc(O)c2c(c1)OC1=C(CCCC1)C2C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.