SMILES: C1=CC(=C(C=C1[N+](=O)[O-])[N+](=O)[O-])S(=O)(=O)O
Description: The molecule is the arenesulfonic acid that is benzenesulfonic acid with two nitro substituents in the 2- and 4-positions. It is an arenesulfonic acid and a C-nitro compound. It is a conjugate acid of a 2,4-dinitrobenzenesulfonate.