You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named [1-[6-(2-methoxyphenyl)pyridazin-3-yl]piperidin-4-yl]-(4-phenylpiperazin-1-yl)methanone is given. What is its corresponding molecular formula?
user
C27H31N5O2
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