You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-methoxy-2-[(R)-(4-methoxy-3,5-dimethylpyridin-2-yl)methylsulfinyl]-4-nitro-1H-benzimidazole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H18N4O5S
assistant