Cd^2*(-5c^2d^3)+2c^2d*(-cd)-1/3cdn*(6c^2dn^2)
Cd^2*(-5c^2d^3)+2c^2d*(-cd)-1/3cdn*(6c^2dn^2) =- 5c^3d^5 - 2c^3d^2n^3 - 2c^3d^2