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