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 other words.
Options:
(a) O=C(N/C(=C/c1ccccc1)C(=O)N1CCOCC1)c1ccc([N+](=O)[O-])cc1
(b) Cc1ccc(OCCCCNC(C)(C)C)c([N+](=O)[O-])c1.O=C(O)C(=O)O
(c) CC(NC(=O)c1cc2c(s1)CS(=O)(=O)C2)c1ccccc1
(d) Nn1c(SCC(=O)N2CCCCC2)nnc1-c1ccncc1
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}