| http://www.w3.org/ns/prov#value | - stituted alkyl group containing 6 or less carbon atoms in the alkyl portion and having a substituent group such as a carboxyl group, sulfo group, cyano group, halogen atom (e.g, fluorine atom, chlorine atom, and bromine atom), hydroxyl group, alkoxycarbonyl group (having 8 or less carbon atoms, e.g., methoxycarbonyl group, ethoxycarbonyl group, and benzyloxycarbonyl group), alkoxy group (having 7
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