{HEAD ~ The method} 2, wherein {TAIL ~ the first temperature} is about 450° C 
wherein
{ HEAD ~ The method } 2 , wherein { TAIL ~ the first temperature } is about 450 ° C
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH