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