added resource to lib

rsrc/isomers.txt

+13R:13S
+1AB:IMR
+558:559
+6PG:LG6
+A:AMP
+ABA:DBB
+ALO:DTH
+BDR:BXX
+C:C5P
+CBI:MAL:MAB
+COA:COZ
+COM:COM
+CTL:TTL
+CTR:MLR
+DIL:IIL
+DNE:NLE
+DTL:MRY
+DX5:LXP:R5P
+G:G25
+GDC:GDD
+GDM:GMY
+GDU:GUD:UFM:UPG
+HY0:HYG
+I:IMP
+LLT:THM
+LPK:LTG
+M13:MDM
+PDE:PNE
+QDN:QI9
+R5A:R5B
+RUB:XBP
+RWF:SWF
+TBE:TBI
+U:U5P
+U2F:UP1:UPF
+UD1:UD2