InChI=1S/C19H23ClO4/c1-13(4-8-17(21)19(2,3)20)10-11-23-15-7-5-14-6-9-18(22)24-16(14)12-15/h5-7,9-10,12,17,21H,4,8,11H2,1-3H3/b13-10+