You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[3-oxo-8-[[5-propan-2-yloxy-2-(2,3,4-trifluorophenyl)phenyl]methyl]-2,8-diazaspiro[4.5]decan-2-yl]benzoic acid is the IUPAC name of a molecule. Please give its molecular formula.
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C31H31F3N2O4
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