You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (5R,6S,7S)-7-ethyl-3-[(2R)-1-hydroxy-3-methylbutan-2-yl]-6-N-methyl-4-oxo-2-N-(2,4,4-trimethylpentan-2-yl)-10-oxa-3-azatricyclo[5.2.1.01,5]decane-2,6-dicarboxamide into molecular formula.
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C26H45N3O5
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