The SMILES [O-][n+]1onc2c1c1no[n+]([O-])c1c1no[n+]([O-])c21 represents a molecule with an acute oral toxicity rat LD50 of 1.942.
The {SMILES__description} {SMILES#} {#represents|is from!} a molecule with an {acute_toxicity__names__noun} of {acute_toxicity#}.