Table 2. Analysis of the 1H-NMR spectral assignments.

Position	Protons	Chemical shift (ppm)	Multiplicity	Integral
1	CH3	2.123	s	3.05
3	CH	7.607 to 7.629	d	1.02
4	CH	7.773 to 7.786	d	1.02
7	CH	7.152 to 7.188	t	1.16
8	NH	6.859	s	0.96
9	CH (a & b)	4.083	s	2.79
11	CH	7.247 to 7.388	t	3.01
12	CH	7.247 to 7.388	t	2.13
13	CH	7.247 to 7.388	t	3.01
14	CH	7.247 to 7.388	t	2.13
15	CH	7.247 to 7.388	t	3.01
17	CH	6.505	s	1.01
18	CH	6.312 to 6.325	d	1.04
20	CH	8.243 to 8.267	d	1
21	CH	7.484 to 7.515	d	1.07
22	CH	8.819 to 8.829	d	1
26	OH	2.123	s	3.05