(3beta,5xi,9xi,13alpha,18xi,19alpha,20beta)-30-oxo-13,30-epoxyurs-11-en-3-yl acetate 3beta-Acetoxy-11-ursen-13alpha,30-olide InChI=1/C32H48O4/c1-19-21-9-13-28(5)17-18-31(8)30(7)15-10-22-27(3,4)24(35-20(2)33)12-14-29(22,6)23(30)11-16-32(31,25(19)28)36-26(21)34/h11,16,19,21-25H,9-10,12-15,17-18H2,1-8H3/t19-,21-,22?,23?,24+,25?,28-,29+,30-,31+,32-/m1/s urs-11-en-30-one, 3-(acetyloxy)-13,30-epoxy-, (3beta,5xi,9xi,13alpha,18xi,19alpha,20beta)-