Using CCCCCCCCCCCCCCCCc1c(C)[nH]c(C)cc1=O, II to produce CCCCCCCCCCCCCCCCc1c(C)[nH]c(C)c(I)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.