N-(3,4-dihydroxy-1-oxotetradecyl)-seryl-2,4-diaminobutanoyl-alpha-aspartyl-lysyl-2,4-diaminobutanoyl-allothreonyl-2,3-didehydro-2-aminobutanoyl-threo-3-hydroxy-alpha-aspartyl-4-chloro-threonine, beta1-lactone