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