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 3-methyl-1-[3-(3-methyl-1-oxo-2,5-dihydro-1lambda5-phosphol-1-yl)buta-1,3-dien-2-yl]-2,5-dihydro-1lambda5-phosphole 1-oxide into molecular formula.
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C14H20O2P2
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