3',4'-Methylenedioxy-α-pyrrolidinopropiophenone
3',4'-Methylenedioxy-α-pyrrolidinopropiophenone (MDPPP) is a stimulant designer drug. It was sold in Germany in the late 1990s and early 2000s as an ingredient in imitation ecstasy (MDMA) pills.
Source: Wikipedia — 3',4'-Methylenedioxy-α-pyrrolidinopropiophenone (CC BY-SA 4.0)