<http://webisa.webdatacommons.org/prov/333848442>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/197619374> .
<http://webisa.webdatacommons.org/197619374>	<http://www.w3.org/ns/prov#value>	"R3 is a hydrogen atom or an optionally substituted alkyl radical, R4 represents a hydrogen atom or forms with R3 an alkylene radical containing 3 or 4 carbon atoms." .
<http://webisa.webdatacommons.org/197619374>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/197619374>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .