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 or b without using any other words.
Options:
a c1ccc(Oc2ccc(Cc3nc4ccccc4[nH]3)cc2)cc1
b C[C@H](c1nc(-c2ccc(S(C)(=O)=O)cc2Cl)no1)[C@H](N)C(=O)N1CCCC1
Answer: a
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-[(4-phenoxyphenyl)methyl]-1H-benzimidazole