new index	atom name	original index
1	C	1
2	C	3
3	C	4
4	C	8
5	C	5
6	C	6
7	C	9
8	N	2
9	O	7
10	O	10
11	O	11
12	H	12
13	H	13
14	H	14
15	H	17
16	H	15
17	H	16
18	H	20
19	H	19
20	H	18
21	H	25
22	H	26
23	H	21
24	H	22
25	H	23
26	H	24
27	H	27