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