Using CCCCCCCCCCOc1ccc(Oc2cccc(C(=O)OCC)c2)cc1CCC(=O)O to produce CCCCCCCCCCOc1ccc(Oc2cccc(C(=O)O)c2)cc1CCC(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.