You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name methyl 5-[(2,4-dioxo-6-phenyl-1H-thieno[2,3-d]pyrimidin-3-yl)methyl]furan-2-carboxylate ?
user
C19H14N2O5S
assistant