You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 9-[4-[2-(4-oxopiperidin-1-yl)ethyl]piperazine-1-carbonyl]-1,2,4,6-tetrahydrothiopyrano[3,4-c]quinolin-5-one;dihydrochloride .
user
C24H32Cl2N4O3S
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