The SMILES S=c1nc[nH]c2nc[nH]c12 represents a molecule that is identified as clinically toxic.
The {SMILES__description} {SMILES#} {#represents|is from!} a molecule that is {clinical_toxicity#not &NULL}identified as {clinical_toxicity__names__adjective}.
3,7-dihydropurine-6-thione