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What is the molecular formula of the molecule 2-[2-[(18Z,21Z,24Z,27Z,30Z,33Z,36Z,39Z)-dotetraconta-18,21,24,27,30,33,36,39-octaenoyl]oxy-3-[(18Z,21Z,24Z,27Z)-triaconta-18,21,24,27-tetraenoyl]oxypropoxy]-2-[2-(trimethylazaniumyl)ethoxy]acetate ?
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C82H137NO8
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