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