You won't die from that.
Maybe wake up a vegetable
You should not spread misinformation like that.
There's only one way you are going to wake up a vegetable following an overdose of opiates/opioids, and that is if you were found only after you have already stopped breathing.
An overdose of opiates will not cause brain damage, unless you stop breathing. If that happens you're as good as dead, unless someone finds and revives you. The only cases of brain damage resulting from an opiate overdose are cases where someone was found after they already stopped breathing.
Most non lethal opiate overdosed a person recovers with no serious side effects.
I would not trust that amount of oxy to do the job, at most you will pass out and wake up many hours later.