You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named tert-butyl N-[1-[[2-(2-chloro-6-methylanilino)-1-(4-ethylphenyl)-2-oxoethyl]-ethylamino]-3-hydroxy-1-oxopropan-2-yl]carbamate by IUPAC nomenclature, provide its molecular formula.
user
C27H36ClN3O5
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