Using O=C(O)CCS, CCCCCCCCCCCCc1ccccc1C=CC(=O)OC(C)(C)C to produce CCCCCCCCCCCCc1ccccc1C(CC(=O)OC(C)(C)C)SCCC(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.