new index	atom name	original index
1	C	9
2	C	6
3	C	7
4	C	3
5	C	4
6	C	2
7	C	5
8	C	1
9	C	8
10	O	10
11	O	11
12	H	20
13	H	18
14	H	19
15	H	14
16	H	15
17	H	12
18	H	13
19	H	16
20	H	17
21	H	21
