You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-[5-(methoxymethyl)thiophen-3-yl]sulfonyl-3-[7-[[5-(methoxymethyl)thiophen-3-yl]sulfonylcarbamoylamino]heptyl]urea into its molecular formula.
user
C21H32N4O8S4
assistant