Using CCCc1cc(Cl)c2oc(-c3ccccc3)c(C)c2c1OC(C)=O to produce CCCc1cc(Cl)c2oc(-c3ccccc3)c(C)c2c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.