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