You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[3-(diethylamino)propyl]-2-(6-methyl-5-morpholin-4-ylsulfonyl-4-oxothieno[2,3-d]pyrimidin-3-yl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H31N5O5S2
assistant