You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (1R,3R)-1-(2,6-difluoro-4-pentan-3-yloxyphenyl)-2-(2-fluoro-2-methylpropyl)-3-methyl-1,3,4,9-tetrahydropyrido[3,4-b]indole into its molecular formula.
user
C27H33F3N2O
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