You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(12Z,15Z)-26-(1,3-dihydroxyhexacosan-2-ylamino)-26-oxohexacosa-12,15-dienyl] heptadecanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C69H133NO5
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