You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R)-1-heptadecanoyloxy-3-[hydroxy-[(2S)-2-hydroxy-3-[hydroxy-[(2R)-2-pentadecanoyloxy-3-undecanoyloxypropoxy]phosphoryl]oxypropoxy]phosphoryl]oxypropan-2-yl] nonadecanoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C71H138O17P2
assistant