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What is the molecular formula of the molecule identified by (1'S,3S,3'R,4S,7'R,10'R)-3'-(cyclopentyloxymethyl)-3'-hydroxy-4-[(2-hydroxyethylamino)methyl]-10'-methyl-1-(N'-methylcarbamimidoyl)spiro[2,4-dihydropyridine-3,11'-tricyclo[5.3.1.01,5]undec-4-ene]-4'-carboxylic acid ?
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C28H44N4O5
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