You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as ethyl 8-methyl-3-oxo-1-pentyl-2-[[4-[2-(2H-tetrazol-5-yl)phenyl]phenyl]methyl]-5,8-dihydropyrazolo[1,2-a]pyridazine-5-carboxylate using the IUPAC nomenclature.
user
C30H34N6O3
assistant