new index	atom name	original index
1	C	5
2	C	3
3	C	6
4	C	2
5	C	8
6	C	4
7	C	9
8	C	10
9	C	7
10	C	1
11	O	11
12	O	14
13	O	15
14	O	16
15	O	12
16	O	13
17	H	21
18	H	19
19	H	22
20	H	18
21	H	23
22	H	24
23	H	20
24	H	17
25	H	26
26	H	25