Your bike's clutch consists of plain steel plates and friction discs, all coated with engine oil. You could probably clean the plates with any solvent as long as it doesn't leave a residue that could contaminate the oil. For the discs my best guess would be brake cleaner.
Why do you want to clean them?
BTW, clutch friction discs for wet clutch bikes like ours aren't designed to run dry so it is recommended to soak new ones in clean motor oil overnight before installing them. If you clean the oil from yours I'd recommend soaking them too.
Yeah, that's a good reason for cleaning them. The alternative without disassembly is multiple flushes (fresh oil & filter, ride a few blocks to circulate it, dump it and go again until it stops slipping).