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tert-butyl {2-[(6-{[6-(2-amino-2-oxoethyl)-29-(butan-2-yl)-21-(3,4-dihydroxybutan-2-yl)-2-hydroxy-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, related products: