ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/2C28H36N4O4.4Cu.2H2O/c2*1-19-11-21-15-29-7-3-25(33)5-9-31-17-23-13-20(2)14-24(28(23)36)18-32-10-6-26(34)4-8-30-16-22(12-19)27(21)35;;;;;;/h2*11-18,25-26,29,31,33-34H,3-10H2,1-2H3;;;;;2*1H2/q;;;;2*+1;;/b2*21-15?,23-17?,30-16-,32-18-;;;;;;/file?format=sdf&get3d=True  -- InChI=1S/2C28H36N4O4.4Cu.2H2O/c2*1-19-11-21-15-29-7-3-25(33)5-9-31-17-23-13-20(2)14-24(28(23)36)18-32-10-6-26(34)4-8-30-16-22(12-19)27(21)35;;;;;;/h2*11-18,25-26,29,31,33-34H,3-10H2,1-2H3;;;;;2*1H2/q;;;;2*+1;;/b2*21-15?,23-17?,30-16-,32-18-;;;;;; could not be loaded.