| http://www.w3.org/ns/prov#value | - halogen atom, --COOR' or a C1-C3 alkyl group, at least one of R4, R5 and R6 is a hydrogen atom, R' represents a hydrogen atom or a C1-C6 alkyl group, R'' and R''' each independently represent a C1-C6 alkyl group, or R'' and R''', together with the
|
