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What is the molecular formula of the molecule 2-[[(E)-3-[(17Z,20Z)-hexacosa-17,20-dienoyl]oxy-2-[[(11Z,14Z,17Z,20Z)-hexacosa-11,14,17,20-tetraenoyl]amino]octadec-4-enoxy]-hydroxyphosphoryl]oxyethyl-trimethylazanium ?
user
C75H138N2O7P+
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