You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-(5-cyclopropyl-2-methylphenyl)-2-(2,6-dimethylphenyl)-4-[(2S,6R)-4-methoxy-2,6-dimethylpiperidin-1-yl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine is the IUPAC name of a molecule. Please give its molecular formula.
user
C33H42N4O
assistant