You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-ethyl-2-(2-methyl-2-methylsulfanylpropyl)-3-[2-(3-propan-2-yl-1,2,4-oxadiazol-5-yl)ethyl]guanidine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H29N5OS
assistant