number	atom	shift
5	C	44.082
6	C	169.022
7	C	214.670
8	C	166.401
9	C	125.789
10	C	120.542
11	C	122.739
12	C	139.847
13	C	140.825
14	H	10.602
15	H	4.530
16	H	5.733
17	H	4.426
18	H	7.481
19	H	8.115
20	H	8.986
21	H	8.595