Using CCOCC, CC(C)(C)OC(=O)[C@H](CCCN(CCNC(=O)OCc1ccccc1)CCNC(=O)OCc1ccccc1)N(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C to produce CC(C)(C)[C@@](N)(CCCN(CCNC(=O)OCc1ccccc1)CCNC(=O)OCc1ccccc1)C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.