You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 5-acetamido-2-[2-[4,5-dihydroxy-2-(hydroxymethyl)-6-[3-hydroxy-2-[[(Z)-pentadec-9-enoyl]amino]hexacosoxy]oxan-3-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-4-hydroxy-6-(1,2,3-trihydroxypropyl)oxane-2-carboxylic acid into its molecular formula.
user
C64H118N2O21
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