You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 1-[(2R)-4-[3-[(4-fluorophenyl)methyl]-1,2,4-thiadiazol-5-yl]-2-methylpiperazin-1-yl]-2-phenylethanone is given. What is its corresponding molecular formula?
user
C22H23FN4OS
assistant