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 3-[(7R)-5-(4-fluorophenyl)-7-(4-methoxyphenyl)-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]propan-1-ol is given. What is its corresponding molecular formula?
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C21H21FN4O2
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