Using CCOC(=O)c1ccc(-c2cc(-c3cnc(-c4ccccn4)nc3O)on2)cc1 to produce O=C(O)c1ccc(-c2cc(-c3cnc(-c4ccccn4)nc3O)on2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.