You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [2-[(13Z,16Z)-docosa-13,16-dienoyl]oxy-3-[(Z)-docos-13-enoyl]oxypropyl] (Z)-triacont-19-enoate into its molecular formula.
user
C77H142O6
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