You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(6-butyl-1,3-benzothiazol-2-yl)-2-(2-oxo-1,3-thiazolidin-3-yl)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H19N3O2S2
assistant