You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[3-(4-methylpiperazine-1-carbonyl)thiolan-2-yl]-2,3-dihydro-1,3-benzothiazole-2-carboxamide into molecular formula.
user
C18H24N4O2S2
assistant