InChI=1S/C21H32O4/c1-14-7-6-12-21(4,24-5)19(22)11-9-15(2)13-18-17(10-8-14)16(3)20(23)25-18/h7,13,18-19,22H,6,8-12H2,1-5H3/b14-7-,15-13-/t18-,19+,21+/m0/s1