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