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