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 propan-2-yl 5-methyl-3-[2-(naphthalen-2-ylamino)-2-oxoethyl]-4-oxothieno[2,3-d]pyrimidine-6-carboxylate .
user
C23H21N3O4S
assistant