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