Characteristic polynomial
$$\begin{equation}\left(\lambda + 4\right)^{3} \left(\lambda + 5\right)^{2} \left(\lambda^{4} + 5 \lambda^{3} - 284 \lambda^{2} - 3600 \lambda - 10288\right) \left(\lambda^{4} - 19 \lambda^{3} - 500 \lambda^{2} - 3504 \lambda - 7856\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda + 4\right)^{3} \left(\lambda + 5\right)^{2} \left(\lambda^{4} + 5 \lambda^{3} - 284 \lambda^{2} - 3600 \lambda - 10288\right) \left(\lambda^{4} - 19 \lambda^{3} - 500 \lambda^{2} - 3504 \lambda - 7856\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 4 & 44 & 48 & 60 & 72 & 588 & 288 & 336 & 1056 & 480 & 3008 & 4800 \\ 1 & -1 & 0 & 2 & 44 & 44 & 40 & 16 & 44 & 528 & 264 & 576 & 1952 \\ 1 & 0 & 0 & 6 & 4 & 12 & 80 & 40 & 48 & 120 & 60 & 384 & 576 \\ 1 & 1 & 6 & 0 & 0 & 4 & 76 & 36 & 44 & 108 & 48 & 372 & 480 \\ 0 & 1 & 1 & 0 & -1 & 6 & 2 & 0 & 6 & 76 & 40 & 76 & 264 \\ 0 & 1 & 0 & 1 & 6 & -1 & 0 & 0 & 2 & 76 & 36 & 72 & 264 \\ 0 & 0 & 1 & 1 & 1 & 0 & 0 & 2 & 2 & 4 & 0 & 28 & 36 \\ 0 & 0 & 1 & 0 & 0 & 0 & 6 & -2 & 4 & 12 & 4 & 32 & 36 \\ 0 & 0 & 0 & 1 & 0 & 1 & 6 & 4 & -2 & 0 & 0 & 20 & 24 \\ 0 & 0 & 0 & 0 & 1 & 2 & 0 & -1 & 2 & 5 & 5 & 6 & 40 \\ 0 & 0 & 0 & 0 & 1 & -1 & 1 & 2 & -2 & 0 & -6 & 2 & 4 \\ 0 & 0 & 0 & 0 & 0 & 0 & 2 & 1 & 1 & 1 & 1 & 0 & 4 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 2 & 1 & 3 & 0\end{pmatrix}\notag\end{equation}$$