You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5R)-4-[(2S)-2-amino-4-[2,4-bis(trifluoromethyl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl]-4-oxobutyl]-5-methylpiperidin-2-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H23F6N5O2
assistant