About: http://webisa.webdatacommons.org/40863589

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In one embodiment, R4 is halogen, such as fluorine and optionally only one R4 is present on the ring.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es