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二新 24-hydroxylated asterosaponins,钠(20R,24S )-6α-O-(4-O-sodiumsulfato-β-d-quinovopyranosyl)-5α-cholest-9(11)-en-3β,24-diol 3 硫酸盐(1 ) 和钠(20R,24S )-6α-O-[3-O-methyl-β-d-quinovopyranosyl-(1