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