Compound 1

(1R,4R,5S)-4-(2-Chloroethyl)-1-((S)-((S)-cyclohex-2-enyl)(hydroxy)methyl)-5-methyl-6-oxa-2-azabicyclo[3.2.0]heptane-3,7-dione

From: Discovery and characterization of a marine bacterial SAM-dependent chlorinase