(4-isothiocyanatonaphthalen-1-yl)-[2-methyl-1-(2-morpholin-4-ylethyl)indol-3-yl]methanone (4-isothiocyanato-1-naphthyl)-[2-methyl-1-(2-morpholinoethyl)indol-3-yl]methanone (4-isothiocyanato-1-naphthyl)-[2-methyl-1-(2-morpholinoethyl)-3-indolyl]methanone