That’s glucose (and also fructose). The formula in the meme is for sucrose. All three are common sugars that you eat. Table sugar is sucrose, but glucose is what plants create during photosynthesis which is probably where you came across its formula.
I know some phones are starting to work with satellite comms,
so these may be replaced by cell phones in the near futureheh, maybe not. See the comment below. At least currently, I have several friends who still have wilderness beacons.