You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named (5-phenylpyrazolidin-3-yl)-[4-(thiophene-2-carbonyl)piperazin-1-yl]methanone is given. What is its corresponding molecular formula?
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C19H22N4O2S
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