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 diethyl 2-[5-bromo-3-oxo-6-propoxy-2-[[4-[2-(1-trityltetrazol-5-yl)phenyl]phenyl]methyl]pyridazin-4-yl]propanedioate .
user
C47H43BrN6O6
assistant