You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[(2R,3S,4R,5S,6S)-4,5-dihydroxy-3-[(2R,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy-6-[[(2R,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxymethyl]oxan-2-yl]oxy-5,7-dihydroxy-2-(4-hydroxy-3-methoxyphenyl)chromen-4-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C34H42O20
assistant