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 5-methoxy-7-methyl-4-[[4-(3-methylsulfonylazetidin-1-yl)-3,6-dihydro-2H-pyridin-1-yl]methyl]-1H-indole .
user
C20H27N3O3S
assistant