You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[(3R,3aR,7E)-7-benzylidene-3-phenyl-3a,4,5,6-tetrahydro-3H-indazole-2-carbonyl]-6-nitrobenzoic acid into its molecular formula.
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C28H23N3O5
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