You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named tert-butyl N-[(2R)-1-[[(1R)-2-[[(1R,2S,5R)-5-methyl-2-propan-2-ylcyclohexanecarbonyl]amino]-1-phenylethyl]amino]-1-oxopropan-2-yl]carbamate by IUPAC nomenclature, provide its molecular formula.
user
C27H43N3O4
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