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