You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-chloro-N-methyl-N-[[5-[(1R,2S)-2-methylcyclopropyl]furan-2-yl]methyl]-3-oxo-4H-1,4-benzoxazine-7-sulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H19ClN2O5S
assistant