Using O=[N+]([O-])O, COc1cc(C(=O)c2cccnc2)ccc1O to produce COc1cc(C(=O)c2cccnc2)cc([N+](=O)[O-])c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.