You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 7-(2-tert-butylpyrimidin-5-yl)-5-oxo-2,3-dihydro-[1,3]thiazolo[3,2-a]pyrimidine-6-carbonitrile .
user
C15H15N5OS
assistant