You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[[6-(2-methoxyphenyl)-7-oxo-3-phenyl-2-sulfanylidene-[1,3]thiazolo[4,5-d]pyrimidin-5-yl]sulfanyl]acetonitrile into molecular formula.
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C20H14N4O2S3
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