Using CCCCCCn1c(=O)c2c(ncn2CCCCC(C)=O)n(C)c1=O to produce CCCCCCn1c(=O)c2c(ncn2CCCCC(C)O)n(C)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.