InChI=1S/C13H14N2O5S3/c1-20-11-4-2-3-10(8-11)15-6-5-9-7-12(22(14,16)17)21-13(9)23(15,18)19/h2-4,7-8H,5-6H2,1H3,(H2,14,16,17)