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 (2S)-2-[[2-[2-(2,4-diamino-5,6,7,8-tetrahydropyrido[2,3-d]pyrimidin-6-yl)ethyl]-1,3-thiazole-4-carbonyl]amino]pentanedioic acid into molecular formula.
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C18H23N7O5S
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