[{"from": "human", "value": "What can you tell me about this molecule? [C][#Branch1][C][#N][Pb][C][#N]"}, {"from": "gpt", "value": "The molecule appears as a white to yellowish powder. Toxic by skin absorption, by ingestion, and by inhalation of dust, or hydrogen cyanide produced by slight decomposition. Produces toxic oxides of nitrogen in fires."}]