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What is the molecular formula of the molecule 5-fluoro-N-(3-methyl-1,2-thiazol-5-yl)-15-oxo-1-azatetracyclo[7.6.1.02,7.013,16]hexadeca-2(7),3,5,9(16),10,12-hexaene-14-carboxamide ?
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C20H14FN3O2S
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