Of course I needed a renderer with a strong algorithm to support tracing light through up to seven boundary condition / reflection events inside of participating media.
I chose Indigo as it has a really well integrated Bi Directional Metropolis Light Transport algorithm that is handle such complicated calculations rather fast.
Generated in C4D
Textured shaded lit and rendered in Cindigo (Indigo for C4D).
Rendered in UHD 3840 X 2160 px.
Rendered on i7 5960x 8 core 16 treads 4.0 GHz
It was looking already pretty clean after 45min.
Since I started the render in the evening I just left it rendering over night for about 12h.
Color corrected using After Effects.
As always I hope you like and enjoy it.
You can make your own experiements if you like:
SCENE DOWNLOAD (for C4D R18 and Indigo Render)