http://www.w3.org/ns/prov#value | - ge and a potentiating agent of the formula OH2OHCHCH=CH2 R is a member selected from the group consisting of hydrogen, methyl and methoxy; R is a member selected from the group consisting of hydrogen and methyl; and R is a member selected from the group consisting of hydrogen, hy'droxy, methyl and amino. 2.
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