Using COc1ccc([N+](=O)[O-])cc1CN1C(=O)c2ccccc2C1=O to produce O=C1c2ccccc2C(=O)N1Cc1cc([N+](=O)[O-])ccc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.