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