You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [2-[(7Z,9Z)-nonadeca-7,9-dienoyl]oxy-3-[(7Z,9Z)-tetradeca-7,9-dienoyl]oxypropyl] henicosanoate into its molecular formula.
user
C57H102O6
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