Characteristic polynomial
$$\begin{equation}\left(\lambda + 4\right)^{2} \left(\lambda^{2} - 3 \lambda - 29\right) \left(\lambda^{9} + 5 \lambda^{8} - 139 \lambda^{7} - 2364 \lambda^{6} - 16933 \lambda^{5} - 66126 \lambda^{4} - 149587 \lambda^{3} - 200856 \lambda^{2} - 133260 \lambda + 38072\right)\notag\end{equation}$$
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
$$\begin{equation}\begin{pmatrix}0 & 12 & 4 & 12 & 24 & 54 & 21 & 30 & 6 & 128 & 32 & 56 & 160 \\ 1 & 0 & 0 & 2 & 4 & 12 & 4 & 8 & 0 & 30 & 6 & 12 & 32 \\ 1 & 0 & -1 & 1 & 12 & 8 & 2 & 12 & 4 & 54 & 24 & 21 & 96 \\ 1 & 3 & 2 & -1 & 0 & 8 & 4 & 0 & 0 & 12 & 0 & 6 & 16 \\ 0 & 1 & 1 & 0 & -1 & 1 & 0 & 2 & 0 & 12 & 4 & 4 & 24 \\ 0 & 1 & 0 & 1 & 2 & -1 & 1 & 0 & 0 & 0 & 0 & 0 & 0 \\ 0 & 1 & 0 & 0 & 0 & 2 & -2 & 0 & 0 & 8 & 0 & 4 & 12 \\ 0 & 0 & 1 & 2 & 3 & 3 & 1 & 0 & 2 & 8 & 0 & 4 & 12 \\ 0 & 0 & 1 & -\frac{1}{2} & 0 & -\frac{3}{2} & -\frac{1}{2} & 0 & -2 & 8 & 12 & 2 & 30 \\ 0 & 0 & 0 & 0 & 1 & \frac{9}{4} & \frac{1}{4} & 5 & 2 & 6 & 8 & \frac{7}{2} & 16 \\ 0 & 0 & 0 & 0 & 1 & -\frac{3}{4} & -\frac{1}{4} & 0 & 1 & 0 & -2 & -\frac{1}{2} & 8 \\ 0 & 0 & 0 & 0 & 1 & \frac{1}{2} & \frac{3}{2} & -8 & -4 & -10 & -12 & -6 & -24 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & \frac{5}{2} & \frac{3}{2} & 1 & 0\end{pmatrix}\notag\end{equation}$$