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  Indian J Med Microbiol
 

Figure 2: Nuclear magnetic resonance proton spectra of (a) S. officinalis leaf extract in CH3OD solution; (b) carnosic acid in CH3OD solution at 600 MHz and 298 K

Figure 2: Nuclear magnetic resonance proton spectra of (a) S. officinalis leaf extract in CH<sub>3</sub>OD solution; (b) carnosic acid in CH<sub>3</sub>OD solution at 600 MHz and 298 K