| http://www.w3.org/ns/prov#value | - e L.sub.h is an activated ester (specifically, tetrafluorophenyl ester), L.sup.2 is an ortho-nitrobenzylamine group with L.sup.3 being a methylene groupthat links L.sub.h and L.sup.2, T has a modular structure wherein the carboxylic acid group of a first lysine has been joined to the nitrogen atom of the L.sup.2 benzylamine group to form an amide bond, a mass spec sensitivity enhancer group (intro
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