new index	atom name	original index
1	C	1
2	C	7
3	C	6
4	C	9
5	C	8
6	C	4
7	C	3
8	C	10
9	O	5
10	O	11
11	O	12
12	O	2
13	H	14
14	H	15
15	H	13
16	H	18
17	H	17
18	H	19
19	H	16
20	H	20
