You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [2-[(8Z,11Z,14Z,17Z)-icosa-8,11,14,17-tetraenoyl]oxy-3-pentadecanoyloxypropyl] (Z)-henicos-11-enoate by IUPAC nomenclature, provide its molecular formula.
user
C59H104O6
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