Why not name it Eutylone then?
Anyway, if someone seeks the serotonic part of MDMA, it will be a disappointment.
Some benzofurans are much more serotonic and thus more similar to MDMA.
Cathinone analog of MDMA is bk-MDMA, which can be converted to MDMA in one step. For a second choice I'd suggest MDPV. If you did a little search you would come across a string of fatal overdoses in the US, from Dipentylone that match a timeline of KU crystal being advertised for sale in the Us