1-(8-(4-Methoxyphenyl)-7-methyl-7,8-dihydro-6H-[1,3]dioxolo[4,5-g]chromen-6-yl)-2-phenylhydrazine AIDS-144716 AIDS144716 Methyl 4-(7-methyl-6-(2-phenylhydrazino)-7,8-dihydro-6H-[1,3]dioxolo[4,5-g]chromen-8-yl)phenyl ether NSC667910