Using C=CCc1cccc(-c2[nH]c3cc(C(=O)OC)ccc3c2C2CCCCC2)c1O to produce CCCc1cccc(-c2[nH]c3cc(C(=O)OC)ccc3c2C2CCCCC2)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.