You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-[(3S)-1-[4-[5-[(1R)-1,2-dihydroxyethyl]-3-[5-[(1R)-1,2-dihydroxyethyl]-3,4-dihydroxyoxolan-2-yl]oxy-4-hydroxyoxolan-2-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3,4-dihydroxy-6-methylheptan-2-yl]-2-hydroxypropanamide .
user
C29H53NO20
assistant