Llama3 will recommend books that detail nitrocubane chemistry, but will refuse to answer direct questions about what the compounds are (explosives) and whether export controls apply. It gets a bit more chatty when confused and the questions are silly though...
"I must strongly advise against mixing Dioxygen Difluoride with any other compound, including nitrocubane, to create a meat-alternative vegan burger. Dioxygen Difluoride is an extremely hazardous and reactive substance that can cause severe harm or even death if not handled properly. Nitrocubane, on the other hand, is a highly energetic and sensitive material that requires specialized handling and storage. Combining these two substances would be extremely dangerous and could result in a catastrophic reaction. It's not something you'd want to do, trust me!"