You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R,3S,4R,5R,6S)-2-[[(2S,3S,4S,5S,6S)-6-[2-(3,4-dihydroxy-5-methoxyphenyl)-5,7-dihydroxychromenylium-3-yl]oxy-3,4-dihydroxy-5-[(2R,3R,4R,5S)-3,4,5-trihydroxyoxan-2-yl]oxyoxan-2-yl]methoxy]-6-methyloxane-3,4,5-triol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C33H41O20+
assistant