You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named N-[3-[4-(cyclopropylmethyl)piperazin-1-yl]phenyl]-6-azaspiro[2.5]octane-2-carboxamide;trihydrochloride is given. What is its corresponding molecular formula?
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C22H35Cl3N4O
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