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