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