Using CCOC(=O)c1nn(-c2ccc(OC)cc2)c2c1CCN(c1ccc(-n3ccccc3=O)cc1)C2=O to produce COc1ccc(-n2nc(CO)c3c2C(=O)N(c2ccc(-n4ccccc4=O)cc2)CC3)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.