You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 2-(1,4-dioxo-3H-phthalazin-2-yl)-N-[2-(1H-indol-3-yl)-2-thiophen-2-ylethyl]acetamide into molecular formula.
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C24H20N4O3S
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