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. 2021 Nov 15;21:371. doi: 10.1186/s12890-021-01745-7

Fig. 1.

Fig. 1

Chemical structure of MgIG. Systematic name, (18α, 20β)-carboxy-11-oxo-oleanorane-12-en-3β-yl-2-O-β-d-glucopyranosiduronyl-α-d-glucopyranosiduronic acid Magnesium Tetrahydrate; formula,C42H60MgO16·4H2O