You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule pentyl 2-[6-methyl-4-oxo-5-(5,6,7,8-tetrahydronaphthalen-2-yl)thieno[2,3-d]pyrimidin-3-yl]propanoate .
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C25H30N2O3S
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