You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule (1R,2R,3R,4R,9S,10S,11S,12S)-pentacyclo[10.2.2.13,10.02,11.04,9]heptadeca-6,15-diene-5,8,13-trione ?
user
C17H16O3
assistant