Dr Mole is on the run

Chapter 1: The perfect molehill?

Inside, you open the package and find a hastily written letter, as well as a few other documents and items.
After reading the letter, you wonder who could be after his molar mass...

Of course, you are ready to drop everything to help your loyal friend and want to set off immediately. Then you remember that you have never been to Dr Mole's home. You vaguely recall that he lives somewhere on the grounds of the SCHWARZE PUMPE industrial complex. But without more specific information, that doesn't get you anywhere, because the area is huge. Only then do you notice the other contents of the package: 16 mysterious wooden triangles, a photo of Dr Mole and a drawing of a strange pyramid... could that be a clue to the location of his home? And then there's his laboratory journal...
Looking at the photo, you can't help but smile despite the serious situation: No wonder Dr Mole devoted himself to chemistry: Anyone who grows up on the grounds of a refinery is likely to be influenced for the rest of their life ... but now there's no time to lose!

At the top is the triangle with the hole; formulas and names must match.
The coloured triangles on the pyramid show which numbers must be added together.
The respective sums are 1+8, 4+1, 3+5 ... accordingly the solution is 958.