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