Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
(a) Cc1cc(C)c(Cc2cc(C)c(C)cc2C)cc1C
(b) O=C(O)c1cc2ccccc2c(Cc2c(O)c(C(=O)OCCOCCN3CCN(C(c4ccccc4)c4ccc(Cl)cc4)CC3)cc3ccccc23)c1O
(c) Clc1ccc(C(Cn2ccnc2)OCc2ccsc2Cl)c(Cl)c1
(d) CS(=O)(=O)c1ccc(-c2cn3ccccc3n2)cc1
(e) COC(=O)C1CCc2cc(C3CCCCC3)ccc21
Answer: d
Task: Please answer the multiple choice question.
Question: Which molecule has the highest {acute_toxicity__names__noun}?
Constraint: Even if you are {#uncertain|not sure!}, you must pick either {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}