Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocker?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
(a) Cc1c(C=O)c2ccccc2n1Cc1ccc([N+](=O)[O-])cc1
(b) Cc1ccccc1NC(=O)CSc1nnc(Cc2ccccc2)c(=O)n1N
(c) COc1cc(Cl)ccc1OCc1cc(C(=O)N(C)CCc2c(C)n[nH]c2C)no1
(d) COC(=O)Cc1ccc(NC(=S)NCCCO)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}