2-[29-(butan-2-yl)-21-(3,4-dihydroxybutan-2-yl)-2-hydroxy-14-(2-hydroxypropoxy)-11-oxido-5,8,20,23,24,27,30,33-octaoxo-1,2,3,5,6,7,8,9,10,12,17,18,19,20,21,22,23,23a-octadecahydro-9,18-(epiminoethanoiminoethanoiminoethanoiminomethano)pyrrolo[1',2':8,9][1,
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