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] COc1cccc(CN(C)CC2CCCN(CCc3ccccc3C)C2)c1
[b] Cn1c2c(c(=O)n(C)c1=O)C1c3cc(Cl)ccc3OCC1CO2
[c] CN(C)CCNC(=O)CCn1nc(-c2ccc(Cl)cc2)ccc1=O
[d] O=C(O)c1ccc(N/N=C/c2c(F)cccc2Cl)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}