^^^ Its not 345.0, thats for temperatures below -25 C.
Could well be 236.3, but note the required crosscheck to sheet 231.1 (page 3 for power steering oils).
NB 231.1 downloads as a pdf.
As optimusprime suggests, the MB dealer is the easiest source, they will check against VIN, and are often the same (ish) price as internet sources.