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