Hello Experts

I have a simple question.

Given V as the function of Z and Y,
Given Z as the function of R and L, $\displaystyle Z=R+s*L $
Given Y as the function of G and C, $\displaystyle Y=G+s*C $
Assume we also know $\displaystyle \frac{\partial V}{\partial Z}$ and $\displaystyle \frac{\partial^2 V}{\partial Z \partial Y}$
If we want to know $\displaystyle \frac{\partial V}{\partial R}$ then it will be equal to $\displaystyle \frac{\partial V}{\partial Z} * \frac{\partial Z}{\partial R}$
How can we find $\displaystyle \frac{\partial^2 V}{\partial R\partial G}$ by using what is given and known?