About: http://webisa.webdatacommons.org/111545946

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 formula (VI), each of L2, L3 and L4 independently is a single bond, -ethynylene-(???C???C???), ???CO???, ???O???CO???, -alkylene-O???, ???CO???NH???, ???O???CO???O???, ???NH???SO2??? or ???NH???CO???O???.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com