You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N,N-dimethyl-2-[[(7S)-2-propan-2-ylsulfonyl-5-thia-2-azaspiro[3.4]octan-7-yl]oxy]acetamide into its molecular formula.
user
C13H24N2O4S2
assistant