This is the two-dimensional chemical structure of fluoroantimonic acid, the strongest superacid.
YOSF0113, public domain
The chemical formula for fluorantimonic acid is HSbF6. The acid is formed by mixing hydrogen fluoride and antimony pentafluoride. Fluoroantimonic acid reacts with nearly all solvents and even dissolves glass. It reacts quickly and explosively with water and disastrously with human tissue.