You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-(4-chlorophenyl)-4-[6-[3-[6-[4-(4-chlorophenyl)-3-oxobutyl]pyridazin-3-yl]cyclohexyl]pyridazin-3-yl]butan-2-one by IUPAC nomenclature, provide its molecular formula.
user
C34H34Cl2N4O2
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