You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please identify the SMILES representation of the molecule named 2-(4-fluorophenyl)-4-[4-[4-[2-(4-fluorophenyl)-7-oxo-6H-pyrazolo[3,4-d]pyridazin-4-yl]phenoxy]phenyl]-6H-pyrazolo[3,4-d]pyridazin-7-one .
user
O=C1NN=C(C2=CC=C(OC3=CC=C(C4=NNC(=O)C5=NN(C6=CC=C(F)C=C6)C=C45)C=C3)C=C2)C2=CN(C3=CC=C(F)C=C3)N=C12
assistant