You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name ethyl 5-ethyl-2-[[2-(4-methoxy-3-morpholin-4-ylsulfonylphenyl)acetyl]amino]thiophene-3-carboxylate into its molecular formula.
user
C22H28N2O7S2
assistant