129473-78-5 207748-52-5 6'-(Dipentylamino)-3'-methyl-2'-(phenylamino)spiro(isobenzofuran-1(3H)-9'-(9H)xanthen)-3-one Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 6'-(dipentylamino)-3'-methyl-2'-(phenylamino)-