new index	atom name	original index
1	C	9
2	C	12
3	C	3
4	C	4
5	C	6
6	C	7
7	C	5
8	C	1
9	C	10
10	N	2
11	O	8
12	O	11
13	H	18
14	H	20
15	H	19
16	H	21
17	H	23
18	H	22
19	H	14
20	H	15
21	H	16
22	H	17
23	H	13
