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