You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[1-[5-(2,3-dihydro-1-benzothiophen-3-yl)-1,3,4-thiadiazol-2-yl]ethyl]propan-1-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H19N3S2
assistant