Characteristic polynomial
$$\begin{equation}\left(\lambda - 3\right) \left(\lambda^{11} + 6 \lambda^{10} + 5 \lambda^{9} - 160 \lambda^{8} - 1282 \lambda^{7} - 3732 \lambda^{6} - 3053 \lambda^{5} - 25903 \lambda^{4} - 143114 \lambda^{3} - 964835 \lambda^{2} - 808529 \lambda - 425471\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda - 3\right) \left(\lambda^{11} + 6 \lambda^{10} + 5 \lambda^{9} - 160 \lambda^{8} - 1282 \lambda^{7} - 3732 \lambda^{6} - 3053 \lambda^{5} - 25903 \lambda^{4} - 143114 \lambda^{3} - 964835 \lambda^{2} - 808529 \lambda - 425471\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 2 & 0 & 0 & 0 & 3 & 0 & 0 & 4 & 4 & 0 & 0 \\ 2 & 0 & 1 & 0 & 0 & 0 & 2 & 2 & 0 & 0 & -3 & 0 \\ 1 & 0 & -1 & 0 & 0 & 2 & -2 & -2 & 0 & 0 & 3 & 4 \\ 1 & 0 & 0 & 0 & 2 & 0 & 0 & 0 & 0 & 3 & 0 & -4 \\ 0 & 1 & 0 & 2 & 0 & 0 & 1 & 2 & 0 & 0 & -2 & 0 \\ 0 & 3 & 2 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 2 & 0 \\ 0 & 0 & 1 & 3 & 0 & 0 & -1 & -2 & 4 & 2 & 2 & 6 \\ 0 & 0 & 1 & -1 & 0 & 0 & 0 & 0 & -2 & 0 & -2 & -3 \\ 0 & 0 & 0 & 0 & 1 & -3 & 0 & -2 & 0 & 0 & 1 & 0 \\ 0 & 0 & 0 & 0 & 3 & 7 & 2 & 4 & 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 & 0 & 0 & 3 & 5 & 0 & 0 & -1 & 2 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 3 & 7 & 2 & 0\end{pmatrix}\notag\end{equation}$$