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