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