InChI=1/C20H20ClNO3/c1-24-20-9-7-15(11-17(20)21)19-10-8-16(25-19)12-22-13-18(23)14-5-3-2-4-6-14/h2-11,18,22-23H,12-13H2,1H3/t18-/m0/s1 F68CA59B8AC67A36