You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(8E,12E,16E)-3,4-dihydroxy-1-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyicosa-8,12,16-trien-2-yl]-2-hydroxytridecanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C39H71NO10
assistant