Correction to: Oncogene advance online publication 15 June 2015; doi:10.1038/onc.2015.215 Since the publication of the above article the authors have identified a number of errors in Supplemental Table S1: Chemical properties of inS3-54 and its analogues. The corrections made are listed below: The formula for A3 has been amended to C28H18Cl2N2O4 from C28H18ClN2O4.