For the protons labeled H ^a and H ^b in the structure below, predict the characteristics of their signals in the ¹ H NMR spectrum: the approximate chemical shift, the splitting pattern, and the integration value.

H a H NMR signal for Ha H NMR signal for Hb Approximate chemical shift 1 ppm 1.3 ppm 1.6 ppm 2 ppm 3-4 ppm 5-6 ppm 1 ppm 1.3 ppm 1.6 ppm 2 ppm 3-4 ppm 5-6 ppm Splitting singlet doublet triplet quartet quintet multiplet singlet doublet triplet quartet quintet multiplet Integration value 1H 2H 3H 4H 5H O 6H 1H 2H 3H 4H 5H 6H