Using O=C(O)c1ccccc1O, CC(C)(C)OC(=O)NCCSSCCN to produce CC(C)(C)OC(=O)NCCSSCCNC(=O)c1ccccc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.