[cedsav]

From your description, I'm guessing that the company will go under the day you quit. The founders can go on for a while on empty, but they need you if for any of their hail mary plans to have a chance to succeed.

However, their only obligation to you is payroll. As long as they can pay you, they surely expect you to keep working for the team, and they probably wouldn't be happy if you jumped ship early.

Obviously, it's up to them to be candid about the situation and give you advance notice if money runs out. So, if I were you I would put it on the table. Make sure they understand you will quit if they can't pay you, and that you expect them to give you 30 day notice.