002970: InChI=1.12Beta/C20H24O4/c1-12(21)13-6-7-15-14(10-13)16(22)11-17-19(15,2)8-5-9-20(17,3)18(23)24-4/h1-4H3,5H2,6-7H,8-9H2,10H,11H2,17H/t17-,19-,20-/m1/s1