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