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