You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [(2S)-3-[hydroxy-[(5S)-2,3,4,5,6-pentahydroxycyclohexyl]oxyphosphoryl]oxy-2-[(9E,12E,15E)-octadeca-9,12,15-trienoyl]oxypropyl] (E)-docos-13-enoate by IUPAC nomenclature, provide its molecular formula.
user
C49H87O13P
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