Question: Selecting identical terms

I have the following multi-variable polynomial:

F:=(d^4-2)*C+(7*d^3-3*d)*C^2-(10*d^4-4*d)*L^2+(d-d^2)*L^3+(R+z^2)*x1+(10*d^3-4*d)*L;

Here my question is how to (i) generate "F" in the following form-> F:=k1*C+k2*L+k3*x1; (ii) How to find the coeficient terms of  "C", "L", "x1".

 

Thanking you in advance.

 

MVC

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