You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by (2S)-2-[[5-[(5R)-5-ethyl-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]-4-prop-2-enyl-1,2,4-triazol-3-yl]sulfanyl]propanamide ?
user
C18H24N4OS2
assistant