Well, if the data is encrypted, it’s pretty much impossible unless the phone can be repaired. If you remember disabling encryption when you setup the phone, then it can be recovered via Chip-Off data recovery.
At this point, the sooner you get the phone out of the desiccant (which does nothing but allow corrosion to take hold) and into the hands of a competent micro-soldering repair shop for a proper decontamination, the better.