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