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What is the molecular formula of the compound with this IUPAC name (3R,4R,5S,6S,7R,8R,9R)-9-(2-aminoethyl)-4,5,6,8,23-pentahydroxy-20-methoxy-16-methyl-2,24-dioxatetracyclo[13.6.2.13,7.018,22]tetracosa-1(22),15(23),16,18,20-pentaen-11-yn-14-one ?
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C26H31NO9
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