Characteristic polynomial
$$\begin{equation}\left(\lambda + 3\right) \left(\lambda + 4\right) \left(\lambda^{3} - 108\right) \left(\lambda^{3} - 8 \lambda^{2} - 56 \lambda - 76\right) \left(\lambda^{5} + 11 \lambda^{4} + 47 \lambda^{3} + 128 \lambda^{2} + 316 \lambda + 389\right)^{2}\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda + 3\right) \left(\lambda + 4\right) \left(\lambda^{3} - 108\right) \left(\lambda^{3} - 8 \lambda^{2} - 56 \lambda - 76\right) \left(\lambda^{5} + 11 \lambda^{4} + 47 \lambda^{3} + 128 \lambda^{2} + 316 \lambda + 389\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 2 & 4 & 4 & 6 & 3 & 3 & 6 & 6 & 15 & 6 & 15 & 12 & 8 & 16 & 8 & 16 & 20 \\ 1 & -1 & 0 & 0 & 1 & 4 & 4 & 4 & 0 & 2 & 0 & 2 & 4 & 6 & 12 & 6 & 3 & 12 \\ 1 & 0 & -1 & 1 & 1 & 2 & 0 & 2 & 2 & 4 & 0 & 4 & 4 & 3 & 3 & 0 & 3 & 4 \\ 1 & 0 & 1 & -1 & 1 & 0 & 2 & 2 & 0 & 4 & 2 & 4 & 4 & 0 & 6 & 3 & 3 & 4 \\ 1 & 1 & 1 & 1 & -1 & 0 & 0 & 0 & 2 & 2 & 2 & 2 & 0 & 0 & 0 & 0 & 3 & 4 \\ 0 & 1 & 1 & 0 & 0 & -2 & 1 & 1 & 0 & 1 & 0 & 0 & 1 & 2 & 2 & 0 & 0 & 3 \\ 0 & 1 & 0 & 1 & 0 & 1 & -2 & 1 & 0 & 0 & 0 & 1 & 1 & 0 & 4 & 2 & 0 & 3 \\ 0 & 1 & 0 & 0 & 1 & 1 & 1 & -2 & 0 & 0 & 0 & 0 & 0 & 2 & 2 & 2 & 0 & 3 \\ 0 & 0 & 1 & 2 & 0 & 0 & 0 & 0 & -1 & 1 & 0 & 2 & 1 & 2 & 2 & 0 & 2 & 3 \\ 0 & 0 & 1 & 0 & 1 & 1 & 0 & 0 & 1 & -2 & 0 & 1 & 0 & 0 & 0 & 0 & 0 & 0 \\ 0 & 0 & 2 & 1 & 0 & 0 & 0 & 0 & 0 & 2 & -1 & 1 & 1 & 0 & 4 & 2 & 2 & 3 \\ 0 & 0 & 0 & 1 & 1 & 0 & 1 & 0 & 0 & 1 & 1 & -2 & 0 & 0 & 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 & 1 & 0 & 0 & 1 & 0 & 1 & 0 & 1 & -1 & 0 & 0 & 0 & 2 & 0 \\ 0 & 0 & 0 & 0 & 0 & 1 & 3 & 1 & \frac{3}{2} & -1 & -\frac{1}{2} & 2 & 0 & -\frac{3}{2} & \frac{3}{2} & \frac{1}{2} & 0 & 2 \\ 0 & 0 & 0 & 0 & 0 & 1 & 1 & 3 & \frac{1}{2} & 4 & \frac{1}{2} & 4 & 5 & \frac{3}{2} & \frac{1}{2} & \frac{3}{2} & 1 & 2 \\ 0 & 0 & 0 & 0 & 0 & 2 & 0 & -2 & -1 & -2 & 1 & -5 & -5 & -1 & -1 & -3 & -1 & 0 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 2 & 4 & 2 & 4 & 2 & 1 & 1 & 1 & 0 & 2 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 2 & 4 & 2 & 2 & 0\end{pmatrix}\notag\end{equation}$$