inverse laplace transform help

Hi, I have a transfer function for an electrical circuit in the frequency domain and need to inverse laplace transform the function in order to get the time domain response of the circuit. However I am stuck on how to go about solving the function as it currently cant be directly converted to the time domain in the format that it is in. The function is as follows...

1/L*C*S^2 + R*C*S + 1

I do not have numerical values for L,C and R and need to solve this symbolically. I hope someone can point me in the right direction.

Thanks