XANTHOASCIN

4-[4-(3,4-Dihydro-2,2-dimethyl-2H-1-benzopyran-6-yl)-2,3-diisocyano-1,3-butadienyl]phenol

4-(3,4-Dihydro-2,2-dimethyl-2H-1-benzopyran-6-yl)-1-(4-hydroxyphenyl)-1,3-butadiene-2,3-diyldiisocyanide