You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-(azulen-2-ylmethyl)-2-[(2S,3R,4R,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]phenolate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H23O6-
assistant