Using CC(=O)[C@H](COCc1ccccc1)NC(=O)OC(C)(C)C, NCCO to produce CC(NCCO)[C@H](COCc1ccccc1)NC(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.