Using CCCCCCn1c(=O)c(C=O)c(OC)c2cc(C)ccc21, NCCS to produce CCCCCCn1c(=O)c(C2NCCS2)c(OC)c2cc(C)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.