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