InChI=1S/C16H21ClO5/c1-8(9(2)18)4-5-10-6-11-12(7-22-10)14(19)16(3,21)15(20)13(11)17/h4-6,8-9,12,14,18-19,21H,7H2,1-3H3/b5-4+/t8-,9-,12+,14-,16+/m0/s1