Characteristic polynomial
$$\begin{equation}\left(\lambda^{2} + 2 \lambda + 5\right) \left(\lambda^{11} + 5 \lambda^{10} - 40 \lambda^{9} - 404 \lambda^{8} - 1670 \lambda^{7} - 11423 \lambda^{6} - 64856 \lambda^{5} - 285286 \lambda^{4} - 796427 \lambda^{3} - 1725436 \lambda^{2} - 2064680 \lambda - 1265912\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda^{2} + 2 \lambda + 5\right) \left(\lambda^{11} + 5 \lambda^{10} - 40 \lambda^{9} - 404 \lambda^{8} - 1670 \lambda^{7} - 11423 \lambda^{6} - 64856 \lambda^{5} - 285286 \lambda^{4} - 796427 \lambda^{3} - 1725436 \lambda^{2} - 2064680 \lambda - 1265912\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 0 & 4 & 4 & 0 & 3 & 3 & 6 & 3 & 8 & 4 & 8 & 20 \\ 2 & 0 & 0 & 1 & 4 & 4 & -2 & 4 & 2 & 6 & 3 & 0 & 0 \\ 1 & 0 & -1 & 2 & 0 & 0 & 0 & 0 & 0 & 3 & 0 & 3 & 0 \\ 1 & 0 & 1 & -1 & 0 & 0 & 2 & 4 & 2 & 0 & 0 & 0 & 8 \\ 0 & 1 & 2 & -1 & -1 & 2 & 0 & 0 & -1 & 0 & 0 & -2 & 0 \\ 0 & 1 & 0 & 3 & 1 & -1 & 0 & 1 & 1 & 4 & 2 & 0 & 0 \\ 0 & 2 & 0 & 0 & 0 & 1 & 0 & 0 & 0 & 4 & 2 & 4 & 6 \\ 0 & 0 & 1 & 2 & 0 & 0 & 0 & -1 & 0 & 0 & 0 & 2 & 0 \\ 0 & 0 & 1 & 0 & 0 & 0 & 0 & 2 & 0 & 0 & 0 & 0 & 6 \\ 0 & 0 & 0 & 0 & 1 & 5 & 1 & 3 & 0 & 0 & 1 & 1 & 4 \\ 0 & 0 & 0 & 0 & 1 & -6 & -2 & 1 & 3 & 0 & -2 & -2 & -8 \\ 0 & 0 & 0 & 0 & 2 & 2 & 2 & 0 & 0 & 1 & 0 & 0 & 4 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & \frac{7}{2} & \frac{3}{2} & \frac{3}{2} & 0\end{pmatrix}\notag\end{equation}$$