You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5R)-2-[(3R,5R)-3,5-dimethylpiperidin-1-yl]-N-(2-methyl-5-nitrophenyl)-4,7-dioxo-3,5,6,8-tetrahydropyrido[2,3-d]pyrimidine-5-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H26N6O5
assistant