Using Nc1nc(N)c2cc(CO)cnc2n1, CCOC(=O)CC[C@H](NC(=O)c1ccc(N)cc1)C(=O)OCC to produce CCOC(=O)CC[C@H](NC(=O)c1ccc(NCc2cnc3nc(N)nc(N)c3c2)cc1)C(=O)OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.