The SMILES CNC(=O)N1C(=O)CN=C(c2ccccc2)c2cc([N+](=O)[O-])ccc21 represents a molecule with an acute oral toxicity rat LD50 of 2.171.
The {SMILES__description} {SMILES#} {#represents|is from!} a molecule with an {acute_toxicity__names__noun} of {acute_toxicity#}.