[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a highly toxic conjugate acid of a cyanide that is used as a chemical weapon agent. It is characterized as a colorless gas or liquid with a strong pungent odor that causes irritation of the eyes and respiratory tract, as well as toxic systemic effects."}, {"from": "gpt", "value": "[C][#N]"}]