A flexible multilayer substrate includes a multilayer body including a plurality of laminated resin layers. The pixel circuit region, the peripheral circuit region, and the intermediate region are provided with a semiconductor layer, a first wiring layer on the semiconductor layer, and a second wiring layer located away from the semiconductor layer relative to the first wiring layer. The present invention also provides novel method of synthesizing benzotropolone compounds in high yields and method of treating inflammatory conditions using benzotropolone containing compounds.