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 (1S,5R,9S,10R,12R,14R)-5-hydroxy-3,11,11,14-tetramethyl-7-methylidenetetracyclo[7.5.1.01,5.010,12]pentadec-2-ene-4,15-dione .
user
C20H26O3
assistant