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