That's not a proper name: It would just be 3,4,?-trimethyl amphetamine. The meth oxy or methylene dioxy groups tend to make it more psychedelic, Methyl groups tend to make it more like speed, anti-appetite, etc. The oxygen is the fun part!
You're right
PIA. Per Google:
3,4-methylenedioxy-N-methamphetamine, chemical formula of C11H15NO2 and molecular mass of 193.25 g/mol
Here is the chemical structure in 2D. I couldn't get the 3D to work.
