You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R,3S,4R,5R)-N-(5-amino-4-hydroxy-5-methylhexyl)-2,3,4,5,6-pentahydroxyhexanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C13H28N2O7
assistant