TL;DR Don't take this; it is a likely carcinogen.
Carbamates are much more than "powdered versions" of their alcohol counterparts, they are in fact totally different drugs. They are not just prodrugs for alcohols.
The carbamate group is basically a urea molecule bonded to an alcohol. Many carbamates are also known as urethanes - urethane is the name for
ethyl carbamate.. You may know of "urethanes" as a type of plastic. Some carbamates are used as insecticides (Carbaryl) because they inhibit AChE.
The "pharmacologically relevant" carbamates are drugs like carisoprodol/Soma, tybamate, methocarbamol etc, which have not-immediately-obvious modes of action (in some cases GABAa agonism but in others, e.g. adenosine reuptake inhibition, or just total unknown MoAs)
While many carbamates are not
acutely toxic, the lower alkyl carbamates are pretty reactive, probably because they will interacalate into DNA, or something like that. Either way there is a lot of evidence suggesting that they're not good for you...
I do not see any reason to assume that 2m2b-carbamate would not also be this way. At the very least i see no good reason to assume it is safe...
I would definitely avoid consuming random alcohol carbamates for this reason.