1 M6V (1r,2r,3r,6r,7s,8s,9r,10r,12r,13s,17s)-3-ethyl-2,10-dihydroxy-2,6,8,10,12,15,15,17-octamethyl-5-oxo-9-(prop-2-yn-1-yloxy)-4,14,16-trioxabicyclo[11.3.1]heptadec-7-yl {4-[N'-(methylcarbamoyl)carbamimidamido]butyl}carbamate 1.000 2 M6G (1r,2r,3r,6r,7s,8s,9r,10r,12r,13s,17s)-3-ethyl-2,10-dihydroxy-2,6,8,10,12,15,15,17-octamethyl-5-oxo-9-(prop-2-yn-1-yloxy)-4,14,16-trioxabicyclo[11.3.1]heptadec-7-yl {5-[N'-(methylcarbamoyl)carbamimidamido]pentyl}carbamate 0.712 3 M6B (1r,2r,3r,6r,7s,8s,9r,10r,12r,13s,17s)-3-ethyl-2,10-dihydroxy-2,6,8,10,12,15,15,17-octamethyl-5-oxo-9-(prop-2-yn-1-yloxy)-4,14,16-trioxabicyclo[11.3.1]heptadec-7-yl {3-[N'-(methylcarbamoyl)carbamimidamido]propyl}carbamate 0.707