mol="2ZX" Charge="0"
lab="N1"	NH="2" 
lab="C2"	NH="0" 
lab="C3"	NH="1" 
lab="C4"	NH="0" 
lab="CL5"	NH="0" 
lab="N6"	NH="0" 
lab="C7"	NH="0" 
lab="N8"	NH="2" 
lab="N9"	NH="0" 
