InChI=1/C21H15NO3/c23-21(20-11-13-5-1-3-7-17(13)24-20)22-14-9-10-16-15-6-2-4-8-18(15)25-19(16)12-14/h1-10,12,20H,11H2,(H,22,23)/t20-/m1/s1/f/h22H 523145F4910A8796