number	atom	shift
2	C	66.984
3	C	71.612
4	C	71.612
5	C	66.984
9	H	0.267
10	H	4.448
11	H	5.248
12	H	4.641
13	H	4.641
14	H	4.448
15	H	5.248
16	H	0.267
17	H	2.684
18	H	2.684