Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
(a) CCCCCC=O
(b) CN1CCC(n2[nH]c(-c3ccccc3)c(Cc3ccccc3)c2=O)CC1
(c) CCP(=S)(OC)SCN1C(=O)c2ccccc2C1=O
(d) Cc1nc(C)c(C(=O)Nc2ccccc2)s1
Answer: c
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}