Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocking compound?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a.) O=S(=O)(c1cccc(C(F)(F)F)c1)N(CCCN1CCOCC1)Cc1cccs1
b.) COc1cc(O)c(C(CCN2CCCCC2)c2cc(OC)c(OC)c(OC)c2)c(OC)c1
c.) CCCS(=O)(=O)Nc1ccc2cn[nH]c2c1
d.) Cc1c(C(=O)NCc2ccco2)oc2c(Cl)cccc12
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}