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