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