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