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