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