1,3-dimethyl-6-prop-1-yn-1-ylpteridine-2,4(1H,3H)-dione 2,4(1H,3H)-pteridinedione, 1,3-dimethyl-6-(1-propynyl)- InChI=1/C11H10N4O2/c1-4-5-7-6-12-9-8(13-7)10(16)15(3)11(17)14(9)2/h6H,1-3H