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What is the molecular formula of the molecule identified by 5-chloro-9-(3-methoxypropoxy)-3-methyl-15-oxo-1,2-diazatetracyclo[11.4.0.02,6.07,12]heptadeca-7(12),8,10,13,16-pentaene-16-carboxylic acid ?
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C21H23ClN2O5
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