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