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