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