Stereoview of the complex of compound 4 with two vancomycin molecules. Compound 4 is shown in capped-sticks representation, colored according to atom types (C, N, O in yellow, blue, and red). The vancomycin molecules are shown in Connolly solvent-accessible surfaces, colored in orange and cyan. The red arrow is used to point to the region of interaction between peptide and the second vancomycin.