You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R,3R,4S,5R)-3,4,5,6-tetrahydroxy-2-[(5-oxopyrrolidin-2-yl)methylamino]hexanal The above is the IUPAC name of a molecule. Write its molecular formula.
user
C11H20N2O6
assistant