You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (2S)-2-[[2-(4-bromo-2-chlorophenoxy)acetyl]-[(4-chlorophenyl)methyl]amino]-N-cyclohexylbutanamide into molecular formula.
user
C25H29BrCl2N2O3
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