You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (2S)-2-amino-N-[2-[2-(2,3-dihydroindol-1-ylmethyl)anilino]-2-oxoethyl]-3-methylbutanamide;dihydrochloride into molecular formula.
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C22H30Cl2N4O2
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