new index	atom name	original index
1	C	8
2	C	7
3	C	3
4	C	5
5	C	2
6	C	6
7	N	9
8	N	4
9	O	1
10	H	20
11	H	21
12	H	18
13	H	19
14	H	12
15	H	13
16	H	14
17	H	15
18	H	10
19	H	11
20	H	16
21	H	17
22	H	22
23	H	23
