You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-[[2-(4-propan-2-ylphenyl)-1,3-thiazol-5-yl]methyl]thieno[3,2-d]pyrimidin-4-one by IUPAC nomenclature, provide its molecular formula.
user
C19H17N3OS2
assistant