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