You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as N-[(3R)-1-(6-methyl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-4-yl)piperidin-3-yl]propanamide using the IUPAC nomenclature.
user
C16H25N5O
assistant