t^3*(4*t^2+1)*(108*t^2-1)*D^4+2*t^2*(3024*t^4+520*t^2-3)*D^3+t*(23136*t^4+2624*t^2-7)*D^2+(24960*t^4+1632*t^2-1)*D+128*t*(36*t^2+1)