(1R,4R,5S)-4-(2-chloroethyl)-1-[(S)-[(1S)-1-cyclohex-2-enyl]-hydroxymethyl]-5-methyl-6-oxa-2-azabicyclo[3.2.0]heptane-3,7-dione (1R,4R,5S)-4-(2-chloroethyl)-1-[(S)-[(1S)-1-cyclohex-2-enyl]-hydroxy-methyl]-5-methyl-6-oxa-2-azabicyclo[3.2.0]heptane-3,7-dione (1R,4R,5S)-4-(2-chloroethyl)-1-[(S)-[(1S)-1-cyclohex-2-enyl]-hydroxy-methyl]-5-methyl-6-oxa-2-azabicyclo[3.2.0]heptane-3,7-quinone (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 nchembio.2007.56-comp1