Characteristic polynomial
$$\begin{equation}\left(\lambda + 2\right) \left(\lambda^{12} + 11 \lambda^{11} - 69 \lambda^{10} - 1741 \lambda^{9} - 10710 \lambda^{8} - 18038 \lambda^{7} + 84883 \lambda^{6} + 384183 \lambda^{5} + 285220 \lambda^{4} - 769649 \lambda^{3} - 1263659 \lambda^{2} - 515220 \lambda - 209681\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda + 2\right) \left(\lambda^{12} + 11 \lambda^{11} - 69 \lambda^{10} - 1741 \lambda^{9} - 10710 \lambda^{8} - 18038 \lambda^{7} + 84883 \lambda^{6} + 384183 \lambda^{5} + 285220 \lambda^{4} - 769649 \lambda^{3} - 1263659 \lambda^{2} - 515220 \lambda - 209681\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 2 & 6 & 8 & 9 & 9 & 6 & 15 & 9 & 8 & 24 & 12 & 10 \\ 1 & -1 & 0 & 1 & 6 & 6 & 2 & 4 & 2 & 3 & 9 & 3 & 4 \\ 1 & 0 & -1 & 2 & 2 & 4 & 2 & 2 & 2 & 3 & 0 & 3 & 8 \\ 1 & 1 & 1 & -1 & 0 & 0 & 2 & 6 & 4 & 3 & 9 & 3 & 0 \\ 0 & 1 & 1 & 0 & -2 & 2 & 0 & 1 & 1 & 2 & 0 & 0 & 3 \\ 0 & 1 & 0 & 1 & 1 & -2 & 0 & 0 & 0 & 2 & 6 & 2 & 0 \\ 0 & 0 & 3 & 1 & 1 & 0 & -1 & 3 & 2 & 2 & 6 & 2 & 0 \\ 0 & 0 & 1 & 2 & 1 & 1 & 0 & -1 & 0 & 0 & 0 & 2 & 3 \\ 0 & 0 & 0 & 1 & 0 & 1 & 1 & 0 & -1 & 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 & 3 & 1 & 3 & 1 & 0 & -1 & 3 & 2 & 2 \\ 0 & 0 & 0 & 0 & 1 & \frac{8}{3} & -\frac{4}{3} & \frac{1}{3} & \frac{2}{3} & 0 & -2 & -\frac{2}{3} & \frac{2}{3} \\ 0 & 0 & 0 & 0 & 0 & 0 & 3 & 6 & 4 & 2 & 3 & 0 & 2 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 3 & 6 & 3 & 0\end{pmatrix}\notag\end{equation}$$