mol="PXB" Charge="0"
lab="C1"	NH="3" 
lab="C2"	NH="2" 
lab="C4"	NH="0" 
lab="O6"	NH="0" 
lab="N8"	NH="1" 
lab="S12"	NH="0" 
lab="O14"	NH="0" 
lab="O16"	NH="0" 
lab="C18"	NH="0" 
lab="C20"	NH="1" 
lab="C21"	NH="1" 
lab="C22"	NH="0" 
lab="C23"	NH="1" 
lab="C24"	NH="1" 
lab="C31"	NH="0" 
lab="C33"	NH="0" 
lab="C35"	NH="0" 
lab="O37"	NH="0" 
lab="N39"	NH="0" 
lab="C42"	NH="0" 
lab="C44"	NH="1" 
lab="C45"	NH="1" 
lab="C46"	NH="1" 
lab="C47"	NH="1" 
lab="C48"	NH="1" 
lab="C55"	NH="3" 
