You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl N-[2-[[(S)-cyclopropyl-(4-methylpyrimidin-2-yl)methyl]amino]-2-oxoethyl]-N-(2-methoxyethyl)carbamate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H30N4O4
assistant