You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (1R,2R,4S,5R,6S,9R,11R,14R,15S,18S,23S)-9-hydroxy-6,10,10,14,15,21,21-heptamethyl-3-oxaheptacyclo[16.5.2.01,15.02,4.05,14.06,11.018,23]pentacosan-25-one .
user
C31H48O3
assistant