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