You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R,3S,4R,5R)-5-amino-1,2,3-trihydroxy-6,7-dioxooctan-4-yl] (2S,3R)-2-amino-3-hydroxybutanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C12H22N2O8
assistant