| http://www.w3.org/ns/prov#value | - the formula ##STR21## or a substituted naphythyl group of the formula ##STR22## wherein X is independently --H, --R, --OR or halogen, R is a C1 -C10 alkyl group of the formula unsubstituted phenyl group of the formula ##STR23## wherein Y is --H, a C1 -C4 alkyl group or halogen, n is an integer from 1 to 3, and m is an integer from 2 to 4. 2.
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