You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 3-[6,7-dihydro-[1,4]dioxino[2,3-f][1,3]benzothiazol-2-yl-(2-fluorobenzoyl)amino]propyl-dimethylazanium ?
user
C21H23FN3O3S+
assistant