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 2-amino-4-[[(1S)-1-(8-ethynyl-1-oxo-2-phenylisoquinolin-3-yl)ethyl]amino]pyrimidine-5-carbonitrile is given. What is its corresponding molecular formula?
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C24H18N6O
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