In this task, you are given a sentence. You are expected to recognize the name of any form of chemical substances. Although there might be several correct answers, you need to write one of them.

Investigation of astatine(III) hydrolyzed species: experiments and relativistic calculations.
astatine(III)

Blockage of the HERG human cardiac K+ channel by the gastrointestinal prokinetic agent cisapride.
K+

Enhancement of radiosensitivity by topoisomerase II inhibitor, amrubicin and amrubicinol, in human lung adenocarcinoma A549 cells and kinetics of apoptosis and necrosis induction.

amrubicin