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