new index	atom name	original index
1	C	11
2	C	8
3	C	9
4	C	6
5	C	7
6	C	3
7	C	5
8	C	4
9	C	10
10	O	1
11	O	2
12	H	20
13	H	18
14	H	19
15	H	16
16	H	17
17	H	12
18	H	13
19	H	14
20	H	15
21	H	21