You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (1R,6S)-3-methyl-N-[4-(propylsulfamoyl)phenyl]-3,9-diazabicyclo[4.2.1]nonane-9-carboxamide .
user
C18H28N4O3S
assistant