4-Methylphenylisobutylamine
4-Methylphenylisobutylamine (4-MAB), also known as 4-methyl-α-ethylphenethylamine, is a stimulant drug of the phenethylamine, amphetamine, and phenylisobutylamine families.
Source: Wikipedia — 4-Methylphenylisobutylamine (CC BY-SA 4.0)