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, b, or c without using any other words.
Options:
a: NC1=N[C@]2(CO1)c1cc(OCC3CCCCC3)ccc1Oc1ccc(-c3cncnc3)cc12
b: CCC(O)(c1cn(Cc2ccc3c(-c4ccccc4)c(C(N)=O)sc3c2)nn1)C(F)(F)F
c: Cn1c(=O)c2c(nc(N3CCC[C@@H](N)C3)n2Cc2cc(F)ccc2Cl)c2ccc(C(=O)O)cc21
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}
(4S)-2'-(cyclohexylmethoxy)-7'-pyrimidin-5-ylspiro[5H-1,3-oxazole-4,9'-xanthene]-2-amine