You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(3R)-1,1-dioxothiolan-3-yl]-N-methyl-2-[(3,4,8,8-tetramethyl-2-oxo-9,10-dihydropyrano[2,3-h]chromen-5-yl)oxy]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H29NO7S
assistant