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