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