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 1-[(2-methoxy-5-nitrophenyl)methoxy]-3-methyl-7,8,9,10-tetrahydrobenzo[c]chromen-6-one is given. What is its corresponding molecular formula?
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C22H21NO6
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