new index	atom name	original index
1	C	7
2	C	3
3	C	4
4	C	2
5	C	5
6	C	8
7	C	9
8	C	6
9	N	1
10	N	10
11	H	16
12	H	17
13	H	18
14	H	13
15	H	14
16	H	12
17	H	15
18	H	11
