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(3S)-9beta-[2-(Methylamino)-2,6-dideoxy-alpha-D-galactopyranosyloxy]-5alpha-hydroxy-5beta-[(4R)-2-oxo-1,3-dioxolane-4-yl]-3abeta,5,9,9abeta-tetrahydro-5'-methyl-7'-methoxyspiro[3H-1-oxa-2H-cyclopenta[a]-s-indacene-3,1'(2'H)-naphthalene]-2,2'-dione


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