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