You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 1,2,3,3a,4,6,7,7a-octahydropyrrolo[3,2-c]pyridin-5-yl(2,3-dihydro-1-benzothiophen-3-yl)methanone ?
user
C16H20N2OS
assistant