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2-{(4R,5R)-5-[(2S,6S,8S,10R,11S,12R,13S,14S,16S,18S,20R,21S,24R,25S,28S,29S,34S,35S,36R,37S)-6,8,10,11,12,14,16,20,24,28,34,36-dodecahydroxy-21-(alpha-D-mannopyranosyloxy)-13,18,23,25,29,35,37,41-octamethyl-42-oxooxacyclodotetraconta-4,22,26,30,40-pentaen