<http://webisa.webdatacommons.org/prov/29924839>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/120694135> .
<http://webisa.webdatacommons.org/120694135>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.es> .
<http://webisa.webdatacommons.org/120694135>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/120694135>	<http://www.w3.org/ns/prov#value>	"In a preferred embodiment, R3 is a halogen, most preferably, fluorine." .