You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[(1S)-1-[8-chloro-1-(2-piperidin-1-ylethoxy)isoquinolin-3-yl]ethyl]-7H-purin-6-amine into its molecular formula.
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C23H26ClN7O
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