mol="NNZ" Charge="1"
lab="N16"	NH="2" 
lab="C17"	NH="2" 
lab="C18"	NH="0" 
lab="C22"	NH="1" 
lab="C23"	NH="1" 
lab="C24"	NH="1" 
lab="C25"	NH="1" 
lab="N26"	NH="0" 
lab="C27"	NH="3"