Using CCCc1cc2c(c3ccc(OC)cc13)OCc1cc(OC)ccc1-2 to produce CCCc1cc2c(c3ccc(O)cc13)OCc1cc(O)ccc1-2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.