new index	atom name	original index
1	C	5
2	C	2
3	C	6
4	C	1
5	C	4
6	C	7
7	C	3
8	C	8
9	O	9
10	O	10
11	H	14
12	H	12
13	H	15
14	H	11
15	H	13
16	H	16
17	H	17
18	H	18
