You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 3-[1-(2-methoxyanilino)-1-oxopropan-2-yl]-4-oxo-2-phenylthieno[2,3-d]pyrimidine-5-carboxylic acid ?
user
C23H19N3O5S
assistant