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