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What is the molecular formula of the compound with this IUPAC name [(4'S,6'S,7'R,8'S)-5'-acetyl-7'-methoxy-10',13'-dioxo-12'-(prop-2-enoxymethyl)spiro[1,3-dioxolane-2,11'-2,5-diazatetracyclo[7.4.0.02,7.04,6]tridec-1(9)-ene]-8'-yl]methyl carbamate ?
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C22H27N3O9
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