Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocking compound (<10uM)?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a) C[C@]1(COc2ccc(OC(F)(F)F)cc2)Cn2cc([N+](=O)[O-])nc2O1
b) O=C([O-])CN(CCOc1ccc([N+](=O)[O-])cc1)CCc1ccc([N+](=O)[O-])cc1
c) CCS(=O)(=O)N1CC(CC#N)(n2cc(-c3ncnc4[nH]ccc34)cn2)C1
Answer: b
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_blocker#not &NULL}a {herg_blocker__names__noun}?
Constraint: You must select none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%herg_blocker%}
Answer: {%multiple_choice_result}
2-[2-(4-nitrophenoxy)ethyl-[2-(4-nitrophenyl)ethyl]amino]ethanoate