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