4,8-Dihydroxy-13-(methoxymethyl)-13-methyl-11-oxo-3,9-bis(phenylmethyl)-12-oxa-2,6,10-triazatetradecanoic acid, 1,1-dimethylethyl-ester, [3S-(3R*,4S*,8S*,9R*)]- AIDS-025453 AIDS025453 BMS-182193 analog NH(CH2CHOHNHCOOH)2 deriv.