Using CCCc1c(OCCCCc2cccc(OC)c2OC)ccc(C(C)=O)c1O to produce CCCc1c(OCCCCc2cccc(O)c2O)ccc(C(C)=O)c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.