You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(4-fluorophenyl)-5-[(3-methylphenyl)methylsulfanyl]-4-[[(2R)-oxolan-2-yl]methyl]-1,2,4-triazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C21H22FN3OS
assistant