You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (5S)-5-ethyl-N-[(Z)-1-(furan-2-yl)ethylideneamino]-4,5,6,7-tetrahydro-1-benzothiophene-2-carboxamide .
user
C17H20N2O2S
assistant