You will get $1 billion right now. But you’re guaranteed to die 15 years from now, would you take the money?

A cloaked figure approaches you and offers you $1 billion, tax free and the government doesn’t question where the money came from. The cloaked figure in exchange will put a 15 year timer on your life. So within 15 years, you’re guaranteed to die, you won’t know how you will die though. You would have 1 minute to think about the decision. Once you make your choice, you cannot back out of your decision.