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