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