InChI=1S/C18H22O3/c1-18-7-6-13-12-3-2-11(19)8-10(12)9-15(20)17(13)14(18)4-5-16(18)21/h2-3,8,13-15,17,19-20H,4-7,9H2,1H3/t13-,14+,15-,17?,18+/m1/s1