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