You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-O-methyl 1-O-[[4-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyphenyl]methyl] 2-benzyl-2-hydroxybutanedioate is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H30O11
assistant