You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[5-[4-(thiomorpholin-4-ylmethyl)phenyl]-1,2,4-oxadiazol-3-yl]cyclopentan-1-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H24N4OS
assistant