| http://www.w3.org/ns/prov#value | - direct bond or a phenylene group, Z is an O or S atom, the NH group or a group of the formula ##STR4## in which R1 is as defined above, Y1 is a H or halogen atom, an alkyl or alkoxy group containing 1-4 C atoms or an acetylamino group, Y2 is a H or halogen atom or an alkyl or alkoxy group containing 1-4 C atoms and B1 is a hydrogen atom, an alkyl or alkoxy group having 1-4 C atoms, a phenyl group
|