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