You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3R,5R,11S)-3,5,11,13,13-pentahydroxy-15-[(2S)-2-[(2R,3S)-3-methoxy-2-methylbutyl]cyclotridecyl]pentadecanal is the IUPAC name of a molecule. Please give its molecular formula.
user
C34H66O7
assistant