100% pure doesn't exist
would it work? all at once?
It would not. Serotonin syndrome, dehydration, hyperthermia would be the possible killers.
SS doesnt always kill, its also
very unpleasant.
Dehydration would need to be minimum over a day or two.
Hyperthermia could also kill you but you risk (additional) brain damage and the chances of dying are quite low.
Now, why you
absolutely shouldn't:
Taking mdma does this thing where you use up the serotonin available, it takes time to replenish it. The more you take mdma, the more you activate your serotonin receptors and use up the serotonin available. Take a very large amount and you risk frying the receptors. This is the equivalent of a long-term (but not permanent) mdma crash. With 1g mdma, you will most likely fry the receptors. That sucks but sadly not everything. Some mdma metabolites (forgot which sorry), are neurotoxins (not drugs, actual toxins), you risk permanent brain damage. I don't know anyone who has visible damage from it but Id assume that implies memory, cognitive and other negative changes.
Please don't do this, you'll only be making your life worse, if you have any questions dont hesitate, you can also message me :)