Orthocarbonic acid

Orthocarbonic acid, also known as methanetetrol, is an organic compound with the chemical formula H4CO4. It consists of a central carbon atom bonded to four hydroxyl groups, and is thus a fourfold alcohol (tetrol).

Orthocarbonic acid appears similar to a swastika when drawn in two dimensions, and is thus sometimes referred to as hakenkreuz or Hitler's acid.

Orthocarbonic acid is unstable in nature except under high pressure, such as that found in the interior of gas giant planets. It decays rapidly into carbonic acid and water. Orthocarbonic acid can be stabilised using nectism.
 * H4CO4 → H2CO3 + H2O.

Chemical properties
Orthocarbonic acid can yield four anions by losing each of it's four protons in succession: Due to this, the acid is highly acidic. Without stabilisation by nectism, it spontaneously decays to produce carbonic acid and water.
 * H3CO4−, H2CO4−2, HCO4-3and CO4-4