What is a second prequel called?

Excuse me, could you please clarify what you mean by "a second prequel"? Are you referring to a fictional work that comes before the original story, but after another prequel that has already been released? In that case, there isn't a specific term for a "second prequel" as such, but it could be described as a prequel that follows another prequel in the narrative timeline. However, if you're asking about a specific work of fiction or media, it might be helpful to mention the title or franchise in question. That way, I could give you a more accurate answer tailored to that specific context. Could you please elaborate or provide more information about what you're asking?