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