E is MDMA, which standard for...
3,4-methylenedioxy-N-methyl alphamethylphenethylamine
The end part can be shortened to,
3,4-methylenedioxy-N-methylamphetamine
E is an amphetamine, so it's a stimulant yes. And it's related to things like amphetamine (speed / whizz) and meth, but it's far...