Using CCOC(=O)COc1ccc(-n2ccc(Nc3ccc(OC)cc3)n2)cc1 to produce COc1ccc(Nc2ccn(-c3ccc(OCC(=O)O)cc3)n2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.