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