About: http://webisa.webdatacommons.org/371269991

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	With particular preference, R1 is an alkylene group, in particular a C2-C8 alkylene group.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es