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What is the molecular formula of the compound with this IUPAC name 10-hydroxy-8,11-dioxo-N-[(1,3,5-trimethylpyrazol-4-yl)methyl]-4-oxa-1,7-diazatricyclo[7.4.0.03,7]trideca-9,12-diene-12-carboxamide ?
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C18H21N5O5
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