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What is the molecular formula of the molecule identified by 8-ethyl-4,23-dihydroxy-11-(1-hydroxy-3-methylbut-2-enyl)-3,14-dimethyl-13,17,21-trioxo-12-oxa-18-azatetracyclo[14.6.1.05,22.019,23]tricosa-1(22),2,4,9,14,19-hexaene-6-carbaldehyde ?
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C31H35NO8
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