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