[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a nitride of uranium.  It is used for fuel in nuclear reactors. Uranium is a chemical element that has the symbol U and atomic number 92. It is a normal part of rocks, soil, air, and water, and occurs in nature in the form of minerals. (L248, L249, L253)"}, {"from": "gpt", "value": "[N][#U]"}]