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