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