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