PS needs the ability to properly convert a scanned color negative into a positive image taking into account the orange mask. Right now you can invert the scan but it has horrendous colour casts.

The Color Negative curves preset can produce good results, but doesn’t work well with this image.
I use Negative Lab Pro (a plugin for Lightroom Classic) for all my color negative conversions, and it did a decent conversion of the image.

They have a free trial that lets you do 24 conversions, with no time limit.
There is also a standalone version coming soon.
 

​@gunzelguy 

Film stock varied. If you want an “Auto” setting, there is that too. 

As one who did this quite a bit back in the day, I have to say that processing/inverting color negative film was a nightmare. There would always be these weird curves with endpoints all over the map, and “runaway colors” that went wherever they wanted. I could spend a week on a single negative, before I got it to where I wanted it.

Transparencies were a walk in the park by comparison, even with the severe limitations in the dynamic range.

I did discover that photographing them gave much better results than scanning, because the tone curves were easier to control with the higher dynamic range of a raw file. Plus, they ended up sharper with less artifacts.

Do you know there is a Color Neg preset in Curves? It might not be perfect, but it will get you very close and fix the orange color issue. I’d probably combine the color neg and Curves layer as a Smart Object, and use Camera RAW to fine tune.  Give it a try.  It really works.