You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (2S,3R,5S)-2-[(2S,5S)-2-[[5,7-dihydroxy-2-(4-hydroxy-3-methoxyphenyl)-2H-chromen-1-ium-3-yl]oxy]-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol into molecular formula.
user
C28H35O16+
assistant