About: http://webisa.webdatacommons.org/239074055

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	R3 and R7 are preferably each independently of the other radicals of formula ##STR7## wherein two bonds are attached in ortho-position to each other, and Y3 is a direct bond, --S--, --O--, --CH2 -- or --CO--.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com