You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-[2-(3-cyclopropyl-2,2-dioxo-2lambda6,1,3-benzothiadiazol-1-yl)ethyl]-3-[2-(4-methoxyphenyl)ethyl]urea .
user
C21H26N4O4S
assistant