Looks a lot like the formula for halo without the 4 chloro group listed in the notation.
For reference Halo is: 4-chloro-17a-methyl-androst-1, 4-diene-3b,17b-diol.
M14add is: 17a-methyl-1,4-androstadiene-3,17diol.
So I would guess that depending on the company and product you found they’re...