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<http://webisa.webdatacommons.org/prov/368976160>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/8717354> .
<http://webisa.webdatacommons.org/8717354>	<http://www.w3.org/ns/prov#value>	"Amines, including triethyl amine and DABCO??? (an amine-based catalyst available from Texaco) may also be used." .
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