2-Anilino-6-[ethyl(2-oxolanylmethyl)amino]-3-methylspiro[9H-xanthene-9,1'-isobenzofuran]-3'-one

2'-Anilino-6'-[ethyl(tetrahydrofuran-2-ylmethyl)amino]-3'-methylspiro[phthalide-3,9'-[9H]xanthene]

6'-[Ethyl[(tetrahydrofuran-2-yl)methyl]amino]-3'-methyl-2'-anilinospiro[isobenzofuran-1(3H),9'-[9H]xanthene]-3-one