InChI=1S/C15H19NO5S/c17-15(16-12-8-6-9-13-16)11-7-4-2-1-3-5-10-14-21-22(18,19)20/h1-5,7-8,10-12H,6,9,13-14H2,(H,18,19,20)/b3-1+,4-2-,10-5+,11-7+