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-(cyclopropylmethoxymethyl)-4,6,7,8-tetrahydrotriazolo[1,5-a][1,4]diazepin-5-yl]-(3-fluorophenyl)methanone into molecular formula.
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C18H21FN4O2
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