Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocker (<10uM)?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a) COc1nc2c(CCC34CCC(NCc5ccc6c(n5)NC(=O)CO6)(CC3)CO4)ccnc2cc1C#N
b) CCn1cc([C@@]2(c3nn(C)c(=O)o3)N[C@@H](c3nc(-c4ccc(F)cn4)c[nH]3)Cc3c2[nH]c2ccccc32)cn1
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_blocker#not &NULL}a {herg_blocker__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_blocker%}
Answer: {%multiple_choice_result}
2-methoxy-8-[2-[4-[(3-oxo-4H-pyrido[3,2-b][1,4]oxazin-6-yl)methylamino]-2-oxabicyclo[2.2.2]octan-1-yl]ethyl]-1,5-naphthyridine-3-carbonitrile