Using O=C(NC1CCN(S(=O)(=O)c2ccc([N+](=O)[O-])cc2)CC1)OCc1ccccc1 to produce Nc1ccc(S(=O)(=O)N2CCC(NC(=O)OCc3ccccc3)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.