| http://www.w3.org/ns/prov#value | - Preferred examples of the benzenesulfonamide derivative are the compounds wherein X can be the same or different and is a halogen atom, methyl group or methoxy group; n is an integer of 0 to 3; R1 is hydrogen, methyl group, ethyl group or --CH2 --COOH; R2 is hydroxyethyl group (--CH2 --CH2 --OH), hydroxypropyl group (--CH2 --CH2 --CH2 --OH), hydroxybutyl group, --CH2 --COOH, --CH2 --CH2 --COOH, --
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