If you’re talking about the rumbly reverby sound, that’s gonna be incredibly tough. The synth and drums are so simple that I’d bet it would me significantly easier to just recreate the parts you want. A little string sample (with a smidge of saw synth added in) and some basic drums is about all you’d need.

You could try using a high Q notch filter (or 8) to reject the louder frequencies of the sound. The sound is pretty spectral though, so you’ll probably need a lot of notches. It’ll probably end up altering the sound of the instruments pretty heavily. Some really specific multiband compression could also help, but will likely make the reverb more noticable.

Good luck!

Good luck!