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