You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [(2R)-1-[hydroxy-[(2S)-2-hydroxy-3-[hydroxy-[(2R)-2-pentadecanoyloxy-3-tetradecanoyloxypropoxy]phosphoryl]oxypropoxy]phosphoryl]oxy-3-(15-methylhexadecanoyloxy)propan-2-yl] icosanoate by IUPAC nomenclature, provide its molecular formula.
user
C75H146O17P2
assistant