You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-[4-[(2R)-2-(4-fluoroindol-1-yl)-3-methylbutanoyl]-2-oxopiperazin-1-yl]-N-(1,3-thiazol-2-yl)benzenesulfonamide;molecular hydrogen by IUPAC nomenclature, provide its molecular formula.
user
C26H28FN5O4S2
assistant