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 ethyl 4,8-dimethyl-3-(2-propan-2-ylidenehydrazinyl)-7,8-dihydro-5H-pyrido[4,3-c]pyridazine-6-carboxylate .
user
C15H23N5O2
assistant