You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [(2R)-1-[hydroxy-[(2S)-2-hydroxy-3-[hydroxy-[(2R)-2-(13-methyltetradecanoyloxy)-3-octanoyloxypropoxy]phosphoryl]oxypropoxy]phosphoryl]oxy-3-(17-methyloctadecanoyloxy)propan-2-yl] 19-methylicosanoate into molecular formula.
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C72H140O17P2
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