<http://webisa.webdatacommons.org/291148100>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<patents.com> .
<http://webisa.webdatacommons.org/prov/54268679>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/291148100> .
<http://webisa.webdatacommons.org/291148100>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/291148100>	<http://www.w3.org/ns/prov#value>	"In an exemplary embodiment, R.sup.ha is unsubstituted methyl, and B is a member selected from" .