InChI=1/C21H28O2/c1-3-5-7-18-19(23)10-12-21(11-6-4-2)14-15-13-16(22)8-9-17(15)20(18)21/h8-9,13,22H,3-7,10-12,14H2,1-2H3/t21-/m1/s1 C246595710E62DC2