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