Characteristic polynomial
$$\begin{equation}\left(\lambda + 3\right)^{4} \left(\lambda^{9} - 7 \lambda^{8} - 164 \lambda^{7} - 877 \lambda^{6} - 13836 \lambda^{5} - 110508 \lambda^{4} - 136549 \lambda^{3} + 602330 \lambda^{2} + 1383960 \lambda + 834237\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda + 3\right)^{2} \left(\lambda^{9} - 7 \lambda^{8} - 164 \lambda^{7} - 877 \lambda^{6} - 13836 \lambda^{5} - 110508 \lambda^{4} - 136549 \lambda^{3} + 602330 \lambda^{2} + 1383960 \lambda + 834237\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 8 & 4 & 16 & 12 & 42 & 60 & 36 & 39 & 264 & 136 & 208 & 640 \\ 1 & -1 & 0 & 3 & 4 & 12 & 6 & 6 & 4 & 54 & 30 & 42 & 144 \\ 1 & 0 & 0 & 4 & 8 & 16 & 4 & -4 & 8 & 6 & -12 & 3 & -8 \\ 1 & 2 & 0 & 0 & 0 & 8 & 12 & 8 & 8 & 36 & 24 & 36 & 136 \\ 0 & 1 & 1 & 0 & -1 & 4 & 3 & 0 & 3 & 0 & -4 & -2 & -6 \\ 0 & 1 & 0 & 1 & 0 & -1 & 0 & 0 & 1 & 12 & 8 & 6 & 30 \\ 0 & 0 & 1 & 2 & 2 & 2 & 0 & -1 & 2 & 8 & 0 & 4 & 0 \\ 0 & 0 & 1 & 0 & 0 & 0 & 4 & 1 & 2 & 16 & 8 & 12 & 30 \\ 0 & 0 & 0 & 1 & 0 & 2 & 0 & 1 & -2 & 0 & 0 & 4 & 12 \\ 0 & 0 & 0 & 0 & 1 & 3 & 0 & -\frac{1}{2} & 1 & -2 & -1 & 0 & 0 \\ 0 & 0 & 0 & 0 & 1 & -1 & 2 & 2 & -1 & 6 & 1 & 5 & 12 \\ 0 & 0 & 0 & 0 & 0 & 0 & 3 & 1 & 2 & 4 & 2 & 0 & 8 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 3 & 1 & 2 & 0\end{pmatrix}\notag\end{equation}$$