6-{[2-(dimethylamino)ethyl]thio}-1,2-dihydrobenzo[c]cyclohepta[ij]-2,7-naphthyridine-4,11-diol InChI=1/C20H21N3O2S/c1-23(2)7-8-26-13-10-17-19-14(5-6-21-20(19)18(25)11-13)15-9-12(24)3-4-16(15)22-17/h3-4,9-11,24-25H,5-8H2,1-2H benzo[c]cyclohepta[ij][2,7]naphthyridine-4,11-diol, 6-[[2-(dimethylamino)ethyl]thio]-1,2-dihydro-