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