You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named methyl (2S)-2-[[(1S,4R,5R,9R,10R,12R,13R,17R)-5,9-dimethyl-14,16-dioxo-19-propan-2-yl-15-oxapentacyclo[10.5.2.01,10.04,9.013,17]nonadec-18-ene-5-carbonyl]amino]propanoate by IUPAC nomenclature, provide its molecular formula.
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C28H39NO6
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