You only must to extract the zip file named House in the Rainforest After that only you need to open the blend file and press Render :D

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Important Info:

This scene uses no more than a 6 GB of RAM or VRAM :D

The render time in my system was around 20 minutes, depends in the resolution and denoiser.

My specs:

I use a i7 4790 with 16 GB of RAM and a GTX 1060 with 6 GB of VRAM take this into account and compare with your system specs n.n