Characteristic polynomial
$$\begin{equation}\lambda \left(\lambda + 1\right) \left(\lambda^{11} + 5 \lambda^{10} - 75 \lambda^{9} - 573 \lambda^{8} - 2426 \lambda^{7} - 8273 \lambda^{6} + 12484 \lambda^{5} - 89292 \lambda^{4} + 88420 \lambda^{3} - 197828 \lambda^{2} - 407640 \lambda + 24425\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\lambda \left(\lambda + 1\right) \left(\lambda^{11} + 5 \lambda^{10} - 75 \lambda^{9} - 573 \lambda^{8} - 2426 \lambda^{7} - 8273 \lambda^{6} + 12484 \lambda^{5} - 89292 \lambda^{4} + 88420 \lambda^{3} - 197828 \lambda^{2} - 407640 \lambda + 24425\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 4 & 2 & 6 & 6 & 6 & 6 & 6 & 0 & 32 & 16 & 20 & 15 \\ 1 & 0 & 0 & 1 & 2 & 0 & 2 & 6 & 0 & -9 & -6 & 0 & 24 \\ 1 & 0 & -1 & 1 & 4 & 4 & 4 & 4 & 0 & 0 & 0 & 3 & 12 \\ 1 & 0 & 1 & -1 & 0 & 6 & 2 & 0 & 4 & 15 & 6 & 6 & 0 \\ 0 & 1 & 0 & 0 & -1 & 1 & 0 & 0 & 2 & -6 & -4 & -2 & 0 \\ 0 & 1 & 0 & 2 & 1 & -1 & -1 & 1 & -2 & 0 & 0 & 0 & 0 \\ 0 & 1 & 0 & 0 & 0 & 1 & 1 & 0 & 2 & 6 & 4 & 2 & 0 \\ 0 & 0 & 2 & 1 & 0 & 0 & 0 & -1 & 0 & 10 & 4 & 6 & 0 \\ 0 & 0 & 0 & 1 & 0 & 0 & 1 & 1 & 0 & 0 & 0 & 2 & 9 \\ 0 & 0 & 0 & 0 & 2 & -1 & \frac{3}{2} & 2 & -4 & -3 & -2 & \frac{3}{2} & 3 \\ 0 & 0 & 0 & 0 & 0 & 3 & -\frac{7}{4} & 2 & 7 & 3 & 2 & -\frac{7}{4} & \frac{3}{2} \\ 0 & 0 & 0 & 0 & 0 & 4 & 1 & 0 & 4 & 3 & 2 & -1 & 0 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & \frac{10}{3} & \frac{4}{3} & \frac{7}{3} & 0\end{pmatrix}\notag\end{equation}$$