[{"from": "human", "value": "What can you tell me about this molecule? [C][=N][N][=C][Branch1][Ring2][S][Ring1][Branch1][N]"}, {"from": "gpt", "value": "The molecule is a synthetic derivative of nicotinamide adenine dinucleotide (NAD). Aminothiadiazole competitively inhibits inosine 5-monophosphate dehydrogenase, thereby disrupting the regulation of cell proliferation and differentiation in a number of cells.  This agent is also a selective human adenosine A3 receptor antagonist. (NCI04)"}]