\[\mathscr{W}\left\{z^{1-b}{\mathbf{M}}\left(a-b+1,2-b,z\right),e^{z}U\left(b-a,%
b,e^{\pm\pi\mathrm{i}}z\right)\right\}=-\ifrac{z^{-b}e^{z}}{\Gamma\left(1-a%
\right)},\]