Using CC1(C)CC(O)CC(C)(C)N1OC1CCCCC1, COC(=O)CCS to produce CC1(C)CC(OC(=O)CCS)CC(C)(C)N1OC1CCCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.