3 4 methylenedioxymethamphetamine structure July 8, 2019 16 32 64 128 3 4 methylenedioxymethamphetamine chemical structure 3 4-methylenedioxyamphetamine 3 4-methylenedioxymethamphetamine 3 4-methylenedioxyethylamphetamine 3 4-methylenedioxymethamphetamine hydrochloride 3 4-methylenedioxymethamphetamine (mdma
