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