You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-phenoxy-N-[[4-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyphenyl]methylideneamino]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H24N2O8
assistant