You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name ethyl (6R)-8-methyl-4-oxo-6-(4-phenylmethoxyphenyl)-3,6-dihydro-2H-pyrimido[2,1-b][1,3]thiazine-7-carboxylate into its molecular formula.
user
C24H24N2O4S
assistant