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 N-(9-methyl-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)-1-(1,2-thiazol-4-yl)indole-3-carboxamide ?
user
C20H22N4O2S
assistant