You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-cyclopropyl-6-[[6-(3,5-dibromophenyl)pyridin-3-yl]methyl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine .
user
C22H20Br2N4
assistant