(3R,4S,5R,8R,9R,10R,14S,17R,18S,19S)-3,19,24-trihydroxy-ursa-12,20(30)-dien-28-oic acid (3alpha)-3,19,24-trihydroxyursa-12,20(30)-dien-28-oic acid Coussaric acid InChI=1/C30H46O5/c1-18-9-14-30(24(33)34)16-15-27(4)19(23(30)29(18,6)35)7-8-21-25(2)12-11-22(32)26(3,17-31)20(25)10-13-28(21,27)5/h7,20-23,31-32,35H,1,8-17H2,2-6H3,(H,33,34)/t20-,21-,22-,23-,25+,26-,27-,28-,29-,30+/m1/s ursa-12,20(30)-dien-28-oic acid, 3,19,24-trihydroxy-, (3alpha)-