Using CCOC(=O)c1cc(C(=O)OC)n(-c2ccc(OC)cc2)n1 to produce CCOC(=O)c1cc(C(=O)O)n(-c2ccc(OC)cc2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.