You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 3-[[5-[(5S)-5-ethyl-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]-4-methyl-1,2,4-triazol-3-yl]sulfanyl]propanenitrile is given. What is its corresponding molecular formula?
user
C16H20N4S2
assistant