About: http://webisa.webdatacommons.org/151852307

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 the case where n is 1, in view of the suitability for synthesis, it is preferable that at least one of R4 and R5 is a hydrogen atom, and it is most preferable that both R4 and R5 are hydrogen atoms.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca