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What is the molecular formula of the compound with this IUPAC name [2-[(11Z,14Z)-heptadeca-11,14-dienoyl]oxy-3-[(9Z,11Z,13Z)-hexadeca-9,11,13-trienoyl]oxypropyl] (11Z,13Z,15Z)-octadeca-11,13,15-trienoate ?
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