You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [2-[(5Z,8Z,11Z,14Z,17Z)-icosa-5,8,11,14,17-pentaenoyl]oxy-3-[(Z)-icos-11-enoyl]oxypropyl] (11Z,14Z,17Z,20Z,23Z,26Z,29Z)-dotriaconta-11,14,17,20,23,26,29-heptaenoate by IUPAC nomenclature, provide its molecular formula.
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C75H120O6
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