You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 6-[(5-bromothiophen-2-yl)methyl]-2-pyridin-4-yl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine .
user
C17H15BrN4S
assistant