You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R)-1-henicosanoyloxy-3-[hydroxy-[(2S)-2-hydroxy-3-[hydroxy-[(2R)-2-nonadecanoyloxy-3-undecanoyloxypropoxy]phosphoryl]oxypropoxy]phosphoryl]oxypropan-2-yl] 20-methylhenicosanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C82H160O17P2
assistant