Characteristic polynomial
$$\begin{equation}\left(\lambda + 2\right)^{3} \left(\lambda^{10} + 3 \lambda^{9} - 29 \lambda^{8} - 1144 \lambda^{7} - 18290 \lambda^{6} - 163897 \lambda^{5} - 1116257 \lambda^{4} - 6026696 \lambda^{3} - 20827165 \lambda^{2} - 38520110 \lambda - 28356523\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda + 2\right)^{2} \left(\lambda^{10} + 3 \lambda^{9} - 29 \lambda^{8} - 1144 \lambda^{7} - 18290 \lambda^{6} - 163897 \lambda^{5} - 1116257 \lambda^{4} - 6026696 \lambda^{3} - 20827165 \lambda^{2} - 38520110 \lambda - 28356523\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 0 & 4 & 8 & 18 & 18 & 12 & 30 & 30 & 144 & 64 & 160 & 300 \\ 1 & -1 & 0 & 3 & 4 & 0 & -8 & 10 & 10 & 15 & 6 & 6 & 24 \\ 1 & 1 & -1 & 2 & -2 & 8 & 8 & 4 & 6 & 0 & 0 & 9 & 48 \\ 1 & 0 & 1 & 0 & 2 & 0 & 0 & 4 & 4 & 42 & 24 & 42 & 96 \\ 0 & 1 & 2 & 0 & -1 & 2 & 0 & 5 & 5 & 4 & 0 & 6 & 0 \\ 0 & 1 & 0 & 1 & 1 & -1 & -2 & 0 & 1 & 4 & 0 & 0 & 0 \\ 0 & 1 & 0 & 0 & 0 & 3 & 0 & 0 & 1 & 10 & 4 & 10 & 18 \\ 0 & 0 & 1 & 1 & 0 & 1 & 2 & -1 & 2 & -2 & -4 & 4 & 0 \\ 0 & 0 & 0 & 1 & 0 & 0 & 0 & 1 & -2 & 2 & 4 & 0 & 18 \\ 0 & 0 & 0 & 0 & 1 & -1 & -2 & \frac{7}{2} & 3 & -1 & -2 & \frac{3}{2} & -12 \\ 0 & 0 & 0 & 0 & 2 & 1 & 2 & -\frac{3}{4} & -\frac{3}{2} & 5 & 0 & \frac{21}{4} & 12 \\ 0 & 0 & 0 & 0 & 0 & 3 & 2 & 0 & 1 & 1 & 2 & -1 & 12 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & \frac{7}{3} & \frac{2}{3} & \frac{8}{3} & 0\end{pmatrix}\notag\end{equation}$$