new index	atom name	original index
1	C	11
2	C	10
3	C	9
4	C	8
5	C	5
6	C	7
7	C	4
8	C	3
9	C	2
10	N	6
11	N	1
12	H	19
13	H	18
14	H	17
15	H	16
16	H	12
17	H	15
18	H	13
19	H	14
