InChI=1/C21H19NO3/c1-4-6-16-21-13(20-15(24-3)7-5-8-17(20)25-16)9-10-14-19(21)12(2)11-18(23)22-14/h4-5,7-11,16H,1,6H2,2-3H3,(H,22,23)/t16-/m0/s1/f/h22H 083E1B4B053FE8E5