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