You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [2-[(11Z,14Z)-icosa-11,14-dienoyl]oxy-3-[(Z)-tridec-9-enoyl]oxypropyl] (15Z,18Z,21Z,24Z,27Z,30Z,33Z)-hexatriaconta-15,18,21,24,27,30,33-heptaenoate by IUPAC nomenclature, provide its molecular formula.
user
C72H120O6
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