new index	atom name	original index
1	C	3
2	C	2
3	C	6
4	C	7
5	C	4
6	N	1
7	N	8
8	N	5
9	H	13
10	H	14
11	H	11
12	H	12
13	H	15
14	H	16
15	H	9
16	H	10
17	H	17
