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