You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-cyclopropyl-3-[[1-(4-propan-2-ylphenyl)sulfonylpiperidin-3-yl]oxymethyl]-1,2,4-oxadiazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H27N3O4S
assistant