You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-[(9Z,11Z)-henicosa-9,11-dienoyl]oxy-3-[(9Z,11Z,13Z)-henicosa-9,11,13-trienoyl]oxypropyl] henicosanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C66H118O6
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