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 ethyl 2-[[2-oxo-4-sulfanylidene-5-(2-tricyclo[9.4.0.03,8]pentadeca-1(15),3,5,7,9,11,13-heptaenyl)pyrimidin-1-yl]methyl]-1,3-thiazole-4-carboxylate into molecular formula.
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C26H21N3O3S2
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