AIDS-115472 AIDS115472 N-[(4-Chlorophenyl)methyl]-2,3,5,6-tetrahydro-9'-(4-morpholinylmethyl)-7'-oxospiro[4H-pyran-4,2'(3'H)-[7H]pyrido[1,2,3-de][1,4]benzoxazine]-6'-carboxamide