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