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