You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[[1-[1-(3-acetylanilino)-1-oxopropan-2-yl]piperidin-4-yl]-ethylamino]acetic acid;hydrochloride into its molecular formula.
user
C20H30ClN3O4
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