Pentosin CHF 11S is the same as Mercedes Q1320001.
I found this thread about the https://www.fcpeuro.com/products/mer...460001#fitment
Mercedes PAS fluid that FCP Euro lists for our car: https://clubgwagen.com/forum/viewtopic.php?t=15703
It's a G-Wagon thread, so take from it what you will. These are the pertinent bits...

I'm in NYC so get my work done at MB Manhattan, its pricey but they work on tons of G's and have always done quality work for me , they say they are the only Mercedes factory-owned dealer in the US. Make sure if you change fluid they use the Mercedes power steering gear oil (Q1460002) , NOT Pentosin CHF 11S or Mercedes equivalent.

Why? (since I'm using Pentosin CHF 11S)

As far as I know the Mercedes steering gear oil is what comes in the car from the factory and is the recommended fluid, its not fully synthetic like the Pentosin. I know a lot of the newer Mercedes use the Pentosin but those don't have the recirculating ball steering system. I used Pentosin accidentally for a few thousand miles and the steering feel became much looser and was slightly seeping from the steering box. I recently flushed the system and went back to the original fluid and steering feels much better and no more seepage. I'm not sure if the CHF 11S would cause any harm but there was a vast difference in steering feel for me compared to the Q1460002.