I dont have idea, i think it was one pill like 1 hour before the presentation, after that, i took like 1 pill more but i dont remember why, i think i was very crazy, when i woke up at 8pm, my room was a mess, i was completely destroyed physically because i only consumed two beers and i dont know how much MDMA in the entire day, I dont remember anything about the presentation, only that it went really well.