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