Can I use MS 5931 power steering fluid instead of MS 9933?

I found that my 2000 Plymouth Neon takes MS9933 power steering fluid but before I knew this I bought some that "meets the service requirements for: Daimlerchrysler MS 5931". I went to Wal-Mart as it is late to see if I could find the MS9933 but nothing at Wal-Mart had any sort of indication as to what type of power steering fluid it was. Anyone know if I can use the stuff I bought already?