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