About: http://webisa.webdatacommons.org/319591908

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	when R1, R2, R3, and R4 are H, R5 is ???OH, R7 is a bond then R6 is not a C1-C3 alkyl;
http://www.w3.org/ns/prov#wasQuotedFrom	google.es