InChI=1S/C14H16O5/c15-12(11-14(18)19)9-7-5-3-1-2-4-6-8-10-13(16)17/h1-10,12,15H,11H2,(H,16,17)(H,18,19)/b2-1-,5-3+,6-4+,9-7+,10-8-