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