N-[2-[5-Amino-1(S)-[4-(4-pyridinyl)piperazin-1-ylcarbonyl]pentylamino]-1(R)-(3,5-dibromo-4-hydroxybenzyl)-2-oxoethyl]-4-(2-oxo-1,2,3,4-tetrahydroquinazolin-3-yl)piperidine-1-carboxamide