Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocking compound (IC50 < 10uM)?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a) CCn1cc(C(=O)NCCCN2CCCC(C)C2)c(=O)c2cc(S(=O)(=O)N3CCc4ccccc4C3)ccc21
b) CCOC(=O)c1sc(NNC(=O)c2ccc(F)cc2)nc1C
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}