new index	atom name	original index
1	C	9
2	C	6
3	C	7
4	C	4
5	C	5
6	C	8
7	C	3
8	C	2
9	O	1
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