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