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  Indian J Med Microbiol
 

Figure 1: Chemical structures of the fi ve coumarin compounds ((a) nodakenin; (b) nodakenetin; (c) decursin; (d) decursinol angelate; (e) decursinol) and isoliquiritin ((f), IS)

Figure 1: Chemical structures of the fi ve coumarin compounds ((a) nodakenin; (b) nodakenetin; (c) decursin; (d) decursinol angelate; (e) decursinol) and isoliquiritin ((f), IS)