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