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