InChI=1/C18H19NO5/c1-11(18(20)22-3)6-8-23-12-4-5-13-15(10-12)19-17-14(7-9-24-17)16(13)21-2/h4-5,7,9-11H,6,8H2,1-3H butanoic acid, 4-[(4-methoxyfuro[2,3-b]quinolin-7-yl)oxy]-2-methyl-, methyl ester methyl 4-[(4-methoxyfuro[2,3-b]quinolin-7-yl)oxy]-2-methylbutanoate