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