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