Using Nc1ccc2c(c1)OCO2, O=Cc1ccc([N+](=O)[O-])cc1 to produce O=[N+]([O-])c1ccc(CNc2ccc3c(c2)OCO3)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.