Characteristic polynomial
$$\begin{equation}\left(\lambda + 4\right)^{4} \left(\lambda^{2} - 3 \lambda - 29\right)^{2} \left(\lambda^{9} + 5 \lambda^{8} - 139 \lambda^{7} - 2364 \lambda^{6} - 16933 \lambda^{5} - 66126 \lambda^{4} - 149587 \lambda^{3} - 200856 \lambda^{2} - 133260 \lambda + 38072\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda + 4\right) \left(\lambda^{2} - 3 \lambda - 29\right) \left(\lambda^{9} + 5 \lambda^{8} - 139 \lambda^{7} - 2364 \lambda^{6} - 16933 \lambda^{5} - 66126 \lambda^{4} - 149587 \lambda^{3} - 200856 \lambda^{2} - 133260 \lambda + 38072\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 2 & 2 & 12 & 12 & 3 & 12 & 15 & 12 & 15 & 54 & 21 & 16 & 16 & 64 & 64 & 80 \\ 1 & -1 & 0 & 0 & 1 & 2 & 12 & 10 & 0 & 2 & 8 & 2 & 12 & 12 & 42 & 12 & 48 \\ 1 & 0 & -1 & 0 & 1 & 2 & 0 & 2 & 12 & 10 & 8 & 2 & 12 & 12 & 12 & 42 & 48 \\ 1 & 0 & 0 & 0 & 2 & 0 & 2 & 4 & 2 & 4 & 12 & 4 & 3 & 6 & 15 & 15 & 16 \\ 1 & 1 & 1 & 3 & -1 & 0 & 0 & 0 & 0 & 0 & 8 & 4 & 0 & 0 & 6 & 6 & 8 \\ 0 & 1 & 1 & 0 & -1 & -2 & 0 & 0 & 0 & 0 & -3 & -1 & 12 & 8 & 8 & 8 & 30 \\ 0 & 1 & 0 & 1 & 0 & 0 & -1 & 2 & 0 & 0 & 1 & 0 & 2 & 4 & 10 & 2 & 12 \\ 0 & 1 & 0 & 0 & 2 & 1 & 3 & -1 & 0 & 1 & 3 & 1 & 0 & 0 & 8 & 0 & 6 \\ 0 & 0 & 1 & 1 & 0 & 0 & 0 & 0 & -1 & 2 & 1 & 0 & 2 & 4 & 2 & 10 & 12 \\ 0 & 0 & 1 & 0 & 2 & 1 & 0 & 1 & 3 & -1 & 3 & 1 & 0 & 0 & 0 & 8 & 6 \\ 0 & 0 & 0 & 1 & 1 & 0 & 1 & 0 & 1 & 0 & -1 & 1 & 0 & 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 1 & 0 & 0 & 0 & 0 & 0 & 0 & 2 & -2 & 0 & 0 & 4 & 4 & 6 \\ 0 & 0 & 0 & 0 & 0 & 1 & 1 & 0 & 1 & 0 & -\frac{3}{2} & -\frac{1}{2} & -2 & 2 & 0 & 0 & 8 \\ 0 & 0 & 0 & 0 & 0 & 1 & -\frac{1}{4} & 2 & -\frac{1}{4} & 2 & -\frac{1}{4} & -\frac{3}{4} & 3 & -1 & \frac{5}{2} & \frac{5}{2} & 6 \\ 0 & 0 & 0 & 0 & 0 & 0 & \frac{3}{2} & 1 & 0 & 0 & \frac{5}{2} & 1 & 1 & 0 & 0 & 1 & 2 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & \frac{3}{2} & 1 & \frac{5}{2} & 1 & 1 & 0 & 1 & 0 & 2 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & \frac{3}{2} & 1 & \frac{5}{2} & \frac{5}{2} & 0\end{pmatrix}\notag\end{equation}$$