1,3-Diazepin-2-one deriv. AIDS-033380 AIDS033380 CU XM320 [4R-(4.alpha.,5.alpha.,6.beta.,7.beta.)]-Hexahydro-5,6-dihydroxy-1,3-bis(4-hydroxybenzyl)-4,7-bis(phenylmethyl)-2H-1,3-diazepin-2-one