| http://www.w3.org/ns/prov#value | - R7 represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or an aryl group; R8 represents an alkyl group having 1 to 5 carbon atoms or an aryl group; and r is an integer of 0 to 3.
|
