111465-74-8 AIDS-181275 AIDS181275 L-Tyrosine, (2S)-2-(3,4-dihydroxyphenyl)glycyl-3-chloro-D-tyrosyl-(2S)-2-(3,5-dihydroxyphenyl)glycyl-(2R)-2-(3,4,5-trihydroxyphenyl)glycyl-(2R-[2'-[(R)-aminocarboxymethyl]-4',6,6'-trihydroxy[1,1'-biphenyl]-3-yl]glycyl-3-chloro-.beta.-hydroxy-, cyclic(13.fwdarw.3),(2.fwdarw.43),(45.fwdarw.64)-triether, (.beta.R)- Teicoplanin aglycon deriv.