You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(1,3-benzodioxol-5-yl)-N-(6-methoxy-3-prop-2-ynyl-1,3-benzothiazol-2-ylidene)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H16N2O4S
assistant