| http://www.w3.org/ns/prov#value | - A ferroelectric chiral smectic liquid crystal composition, comprising:at least one compound represented by the following formula (I): ##STR143## wherein R1 denotes a linear or branched alkyl group having 1-18 carbon atoms wherein R1 is optionally substituted with alkoxy group; X1 denotes a single bond, --O-- or ##STR144## Z denotes a single bond or ##STR145## denotes ##STR146## and n is an integer
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