new index	atom name	original index
1	C	1
2	C	5
3	C	2
4	C	9
5	C	4
6	C	10
7	C	6
8	N	8
9	O	11
10	O	12
11	O	7
12	O	3
13	H	13
14	H	15
15	H	14
16	H	17
17	H	18
18	H	16
19	H	19
