| http://www.w3.org/ns/prov#value | - ula of which is shown in (I):##STR00002## or any of its salts for the preparation of a pharmaceutical composition for the treatment of infections diseases.In Formula (I), Y, Z, X1, X2, m and n are defined as follows:Y are at least one of NO.sub.2, COOH and SO.sub.3H;Z is an atom of O, N or S, preferably oxygen;X.sub.1 and X.sub.2 are ha
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