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