You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl (2E,5S)-2-[[4-[(2S)-butan-2-yl]oxy-3-methoxyphenyl]methylidene]-5-(4-ethoxyphenyl)-7-methyl-3-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C30H34N2O6S
assistant