You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(E)-3,4-dihydroxy-1-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxypentatriacont-8-en-2-yl]-2-hydroxytetracontanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C81H159NO10
assistant