Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a Cc1cc(C(=O)c2ccccc2)ccc1N=Cc1cccc(OCCC(C)C)c1
b Cc1ccc(OC(=O)C(C)C)cc1
c CCCCCCOC(=O)c1ccccc1C(=O)OCCCCCC
d Oc1cccc2ccccc12
e CC(C)CNC(=O)N1CCNC1=O
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}