You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-methyl-1-[3-(methylsulfanylmethyl)-1,2,4-oxadiazol-5-yl]-N-propylpentan-2-amine by IUPAC nomenclature, provide its molecular formula.
user
C13H25N3OS
assistant