You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (5R,10S,14S,17R,19S)-17-hydroxy-14-methylpentacyclo[11.8.0.02,10.05,10.014,19]henicosan-8-one by IUPAC nomenclature, provide its molecular formula.
user
C22H34O2
assistant