How can I prove that
$$ \sum_{n=1}^{\infty}[ 2\, n\,\pi\coth^{-1}(2n)-\pi]= \frac{\pi}{2}-\frac{\pi\,\ln(2)}{2}$$
This result comes from using the Infinite product of $\sin(x)$ in the following well-known integral.
$$\int_0^{\frac{\pi}{2}} \ln[\sin(x)] $$
I hope to find a way to directly prove the result , rather than showing it is related to the above integral.
I have spent a great deal of time on this , so any hints or results will be greatly appreciated.
Thank you very much for your help and time.