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