You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2-methyl-5-oxo-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-yl)methyl (1R,3S)-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropane-1-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H21N3O3S
assistant