Interesting vendor--they're flogging some substance they're calling Special Z. From the vendor profile page:
"Currently the only manufacturers of this drug. Our chemists worked on coming up with something like special K, and a benzo but with more of a psychedelic feel. WE DID IT!
(RS)-2-(dibenzo[b,e]oxepin-11(6H)-ylidene)- 2-(methylamino)"
They sell other shit, too ... but I'm hella curious about this special z shit.
Wut
I got money on it being an <RC-benzo>/MXE mixture.