You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1R,2S,10R,11S,15S)-2,15-dimethyl-14-[(1S)-1-[(2R)-5-methyloxan-2-yl]ethyl]tricyclo[8.7.0.011,15]heptadec-7-en-5-ol is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H46O2
assistant