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 2-(2-cyclopropyl-2-oxoethyl)-5,7-dimethyl-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylic acid .
user
C16H20O3S
assistant