Characteristic polynomial
$$\begin{equation}\left(\lambda^{4} + 9 \lambda^{3} + 22 \lambda^{2} - 24 \lambda - 91\right)^{2} \left(\lambda^{8} - 6 \lambda^{7} + 5 \lambda^{6} - 20 \lambda^{5} - 1522 \lambda^{4} - 974 \lambda^{3} - 12116 \lambda^{2} - 72848 \lambda + 17033\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda^{4} + 9 \lambda^{3} + 22 \lambda^{2} - 24 \lambda - 91\right) \left(\lambda^{8} - 6 \lambda^{7} + 5 \lambda^{6} - 20 \lambda^{5} - 1522 \lambda^{4} - 974 \lambda^{3} - 12116 \lambda^{2} - 72848 \lambda + 17033\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 2 & 2 & 0 & 2 & 0 & 0 & 0 & 0 & 0 & 3 & 0 & 0 & 4 & 4 & 10 \\ 1 & -1 & 1 & 0 & 0 & 0 & 0 & 2 & 0 & 0 & 0 & 0 & 0 & 3 & 0 & 4 \\ 1 & 1 & -1 & 0 & 0 & 0 & 0 & 0 & 0 & 2 & 0 & 0 & 0 & 0 & 3 & 4 \\ 1 & 1 & 1 & -1 & 0 & 2 & 0 & 0 & 0 & 0 & 2 & -6 & 0 & 0 & 0 & 0 \\ 2 & 0 & 0 & 1 & 0 & 0 & 2 & 2 & 2 & 2 & 0 & 6 & 0 & 0 & 0 & 0 \\ 0 & 1 & 1 & -2 & 0 & -2 & -2 & 0 & -2 & 0 & 0 & -4 & 2 & 0 & 0 & 3 \\ 0 & 1 & 0 & 2 & 0 & 1 & -1 & 0 & 2 & 0 & 0 & 0 & 0 & 2 & 0 & 0 \\ 0 & 2 & 0 & 0 & 1 & 0 & 1 & -1 & 0 & 1 & 0 & 2 & 0 & 0 & 0 & 0 \\ 0 & 0 & 1 & 2 & 0 & 1 & 2 & 0 & -1 & 0 & 0 & 0 & 0 & 0 & 2 & 0 \\ 0 & 0 & 2 & 0 & 1 & 0 & 0 & 1 & 1 & -1 & 0 & 2 & 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 2 & 3 & 0 & 0 & 1 & 0 & 1 & 0 & 0 & 2 & 2 & 2 & 0 \\ 0 & 0 & 0 & 0 & 0 & 1 & 2 & 0 & 2 & 0 & 0 & -1 & 0 & 0 & 0 & 2 \\ 0 & 0 & 0 & 0 & 0 & 2 & 0 & 1 & 0 & 1 & -6 & 1 & -2 & -2 & -2 & -4 \\ 0 & 0 & 0 & 0 & 0 & 0 & 2 & 3 & 0 & 0 & 4 & 0 & 1 & 0 & 2 & 2 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 2 & 3 & 4 & 0 & 1 & 2 & 0 & 2 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 2 & 3 & 4 & 4 & 0\end{pmatrix}\notag\end{equation}$$