InChI=1S/C19H22O2/c1-18-9-7-15-14-6-4-13(20)11-12(14)3-5-16(15)17(18)8-10-19(18,2)21/h3-6,11,17,20-21H,7-10H2,1-2H3/t17-,18-,19+/m0/s1