You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-(1,3-benzodioxol-5-yl)-2-[1-(4-nitrophenyl)imidazol-2-yl]sulfanylacetamide by IUPAC nomenclature, provide its molecular formula.
user
C18H14N4O5S
assistant