InChI=1S/C19H18O5S/c20-16-11-19(24,18(22)23)10-15(17(16)21)12-5-4-8-14(9-12)25-13-6-2-1-3-7-13/h1-10,16-17,20-21,24H,11H2,(H,22,23)/t16-,17-,19+/m1/s1