Liquid chromatography conditions: Wufeng LC-100 high performance liquid chromatograph, C18 reversed-phase column (250 mm * 4.6 mm, 5 m), mobile phase A: acetonitrile, B: 1% formic acid in water, A:B 45:55, injection volume of 10 L, flow rate of 1 mL/min, column temperature of 35 , the walk-around time of :40 min, and the wavelength of the ultraviolet detector was 210 nm
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A detailed discussion about reinstatement models is beyond the scope of this manuscript and therefore the readers are being referred to some excellent reviews about this topic (Epstein et al., 2006