Para-Methoxymethamphetamine
para-Methoxymethamphetamine (PMMA), also known as 4-methoxy-N-methylamphetamine (4-MMA), is a serotonergic drug of the amphetamine family related to para-methoxyamphetamine (PMA). It is the 4-methoxy analogue of methamphetamine.
Source: Wikipedia — Para-Methoxymethamphetamine (CC BY-SA 4.0)