This model should be printed by parts. And there are meny.
!!!HOW TO SPLIT THE MESH!!!
Download and install Blender(its free)
TOP LEFT click File > Import > .stl
Select the mesh > TAB(edit mode) > Move cursor to a needed part of a mesh and press L
After part is selected press P > In separate window choose separate
press TAB to move out of edit mod > select the separated object
click File > export > .stl
In export screen on the left panel scroll down and choose SELECTION ONLY > Export STL
Repeat on each part.
The parts are different sizes and forms so you need to use settings accordingly.
Big ones 0.15 layer
And small ones like tubes wires and fingers 0.2