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 N'-(2,5-dimethyl-[1,3]oxazolo[5,4-d]pyrimidin-7-yl)-N,N-dimethyl-1-(3-methylthiophen-2-yl)ethane-1,2-diamine is given. What is its corresponding molecular formula?
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C16H21N5OS
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