| http://www.w3.org/ns/prov#value | - The term ???alkynediyl??? when used without the ???substituted??? modifier refers to a non-aromatic divalent group, wherein the alkynediyl group is attached with two ??-bonds, with two carbon atoms as points of attachment, a linear or branched, cyclo, cyclic or acyclic structure, at least one carbon-carbon triple bond, and no atoms other than carbon and hydrogen.
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