ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C17H18N6/c18-7-5-15%2812-3-1-2-4-12%2923-10-13%289-22-23%2916-14-6-8-19-17%2814%2921-11-20-16/h6%2C8-12%2C15H%2C1-5H2%2C%28H%2C19%2C20%2C21%29/t15-/m1/s1/file?format=sdf&get3d=True -- InChI%3DInChI%3D1S/C17H18N6/c18-7-5-15%2812-3-1-2-4-12%2923-10-13%289-22-23%2916-14-6-8-19-17%2814%2921-11-20-16/h6%2C8-12%2C15H%2C1-5H2%2C%28H%2C19%2C20%2C21%29/t15-/m1/s1 could not be loaded.