Using CC(C)C[C@@H](C(=O)NN1C(=O)NC2(CCNCC2)C1=O)[C@H](CCCc1ccccc1)C(=O)OC(C)(C)C, C=O to produce CC(C)C[C@@H](C(=O)NN1C(=O)NC2(CCN(C)CC2)C1=O)[C@H](CCCc1ccccc1)C(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.