Α-Pyrrolidinopentiothiophenone
α-Pyrrolidinopentiothiophenone (also known as α-PVT) is a synthetic stimulant of the cathinone and thiopropamine (thiophenylpropylamine) families that has been sold online as a designer drug. It is an analogue of α-PVP where the phenyl ring has been replaced by thiophene.
Source: Wikipedia — Α-Pyrrolidinopentiothiophenone (CC BY-SA 4.0)