You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-benzyl-7-[(2-fluoro-4-methoxyphenyl)methyl]-5-[(4-hydroxyphenyl)methyl]-4,6-dioxo-2-prop-2-enyl-4a,5,8,8a-tetrahydro-3H-pyrido[3,4-c]pyridazine-1-carboxamide by IUPAC nomenclature, provide its molecular formula.
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C33H35FN4O5
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