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, or c without using any additional words.
Options:
(a) CCOC(=O)C1=C(C)N=c2s/c(=C\c3ccc(O)c([N+](=O)[O-])c3)c(=O)n2C1c1ccccc1OC
(b) C=CCN1C(=O)C2C(C(=O)NC)C3(C)C=CC2(O3)C1C(=O)NCc1ccc(OC)cc1
(c) COc1cc(N=Nc2c(C)n(C)n(-c3ccccc3)c2=O)ccc1N
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}