number	atom	shift
1	C	184.888
2	C	48.635
3	C	23.935
4	C	23.395
5	C	26.424
6	C	60.445
8	N	50.277
10	H	4.021
11	H	3.360
12	H	2.535
13	H	2.161
14	H	2.681
15	H	2.096
16	H	2.759
17	H	2.610
18	H	3.893
19	H	6.347
20	H	1.568