You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(6R)-8-[2-amino-6-(cyclopropylamino)pyrimidin-4-yl]-2-(2-methoxyethyl)-2,8-diazaspiro[5.5]undecan-3-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H30N6O2
assistant