You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as N-(6,6-dimethyl-2-bicyclo[3.1.1]heptanyl)-3-hydroxy-1-benzothiophene-7-carboxamide using the IUPAC nomenclature.
user
C18H21NO2S
assistant