Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocker?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
(a) COc1ccc(/C=C/CN2CCN(CC(C)C)C(CCO)C2)cc1
(b) CN(CC(=O)Nc1ccccc1C(F)(F)F)C(=O)c1cc(Cl)nc2ccccc12
(c) C[C@H]([C@@H](N)C(=O)N[C@@H](C(=O)O)[C@@H]1O[C@H](n2ccc(=O)[nH]c2=O)[C@@H](O)[C@H]1O)[C@@H](O)c1ccc(O)cn1
(d) Cc1ccc(C(=O)c2c3ccccc3[n+]([O-])n2CCC(N)=O)cc1
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_inhib#not &NULL}a {herg_inhib__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_inhib%}
Answer: {%multiple_choice_result}