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What is the molecular formula of the molecule identified by (2R,3'R,4'S,5'S,6'R,7S)-3',4',5,5'-tetrahydroxy-1-[3-[4-hydroxy-3-(2H-imidazol-4-ylmethyl)phenyl]prop-2-enoyl]-6'-(hydroxymethyl)-2-(3-hydroxypropyl)spiro[8,9-dihydro-3H-pyrano[2,3-g]indole-7,2'-oxane]-2-carboxylic acid ?
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C33H37N3O12
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