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For the molecule named 16-ethyl-1,13-dihydroxy-11-[1-(4-hydroxy-3-methoxycyclohexyl)prop-1-en-2-yl]-22-methoxy-12,18,20,26-tetramethyl-10,28-dioxa-3-azatricyclo[21.4.1.03,8]octacos-17-ene-2,9,15,27-tetrone by IUPAC nomenclature, provide its molecular formula.
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C42H67NO11
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