You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(4E,8E)-1-[3,4-dihydroxy-6-(hydroxymethyl)-5-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-3-hydroxytrideca-4,8-dien-2-yl]pentanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H53NO13
assistant