Inverse Laplace transform Using Convolution theorem .

Question

How Can I find the inverse laplace transform of the following ?

$$\overline{C}(\xi ,s)=\frac{s(s^2+w^2_4)(s^2-w_3^2)}{(s^2+w_1^2)(s^2+w_2^2)(s^2+w_2^2)-(s^2-w_3^2)(s^2+w_4^2)(s^2+w_2^2)}$$

Thank you ...