ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/2C8H8.Am/c2*1-2-4-6-8-7-5-3-1;/h2*1-8H;/b2*2-1-,3-1?,4-2?,5-3-,6-4-,7-5?,8-6?,8-7-;/file?format=sdf&get3d=True  -- InChI=1S/2C8H8.Am/c2*1-2-4-6-8-7-5-3-1;/h2*1-8H;/b2*2-1-,3-1?,4-2?,5-3-,6-4-,7-5?,8-6?,8-7-; could not be loaded.