(-)-Variabilin 0 300.09977 300.31 C17H16O5 (-)-Variabilin [H][C@]12Oc3cc(OC)ccc3[C@@]1(O)COc1cc(OC)ccc12 InChI=1S/C17H16O5/c1-19-10-3-5-12-14(7-10)21-9-17(18)13-6-4-11(20-2)8-15(13)22-16(12)17/h3-8,16,18H,9H2,1-2H3/t16-,17+/m1/s1 VVPGAJNPGZZNBM-SJORKVTESA-N CHEBI:123 knapsack:C00002582 cas:3187-52-8 chebi_ontology kegg.compound:C10539 tannin