You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5S,6R,8S)-4-amino-6-(hydroxymethyl)-8-methyl-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-9-ol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C8H13NO6S
assistant