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![1-[3-(4-oxocyclohexa-2,5-dien-1-ylidene)-4H-pyrido[2,3-b]pyrazin-6-yl]-3-prop-2-enylthiourea](http://hg.y866.cn/compound/lib/scimg/cas/150/800394-83-6.png "1-[3-(4-oxocyclohexa-2,5-dien-1-ylidene)-4H-pyrido[2,3-b]pyrazin-6-yl]-3-prop-2-enylthiourea")
