Using O=Cc1c[nH]c2ccc([N+](=O)[O-])cc12, O=C([O-])[O-] to produce Cn1cc(C=O)c2cc([N+](=O)[O-])ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.