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