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 (1R,4R,5R,7S,11R)-5,10,11-trimethyltetracyclo[5.3.1.11,4.05,11]dodecan-8-one using the IUPAC nomenclature.
user
C15H22O
assistant