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