$\frac{2\sin(x)\sin(4x)}{x^{2}}$

$\frac{\sin(x)\left(20x\left(\sin(x)\right)^{4}+88x\left(\cos(x)\right)^{4}+40\cos(x)\left(\sin(x)\right)^{3}-88\sin(x)\left(\cos(x)\right)^{3}+12x\left(\sin(x)\right)^{2}-24x\left(\cos(x)\right)^{2}-53x\left(\sin(2x)\right)^{2}+12\sin(2x)\right)}{4x^{3}}$