You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 7-[3-(4-aminopiperidin-1-yl)propoxy]-2,3-dihydro-1H-cyclopenta[c]chromen-4-one;dihydrochloride into its molecular formula.
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C20H28Cl2N2O3
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