You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2R)-1-[4-[2-nitro-4-(trifluoromethylsulfonyl)phenyl]piperazin-1-yl]propan-2-ol by IUPAC nomenclature, provide its molecular formula.
user
C14H18F3N3O5S
assistant