InChI=1S/C16H21Cl2NO/c1-19-11-4-6-16(19)13(9-20-2)12(8-11)10-3-5-14(17)15(18)7-10/h3,5,7,11-13,16H,4,6,8-9H2,1-2H3/t11-,12+,13+,16+/m0/s1