You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (2S,3S,4R,5R,6R)-2-[(2S,3R,4S,5S,6R)-4,5-dihydroxy-2-(hydroxymethyl)-6-(4-nitrophenoxy)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol into its molecular formula.
user
C18H25NO13
assistant