You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (2S)-2-[(4-methyl-6,7-dihydro-4H-thieno[3,2-c]pyridine-5-carbonyl)amino]pentanoic acid by IUPAC nomenclature, provide its molecular formula.
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C14H20N2O3S
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