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