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