Using COC(=O)c1ccc2c(c1)CCN(Cc1ccc(C3=CCN(C(=O)OC(C)(C)C)CC3)cc1)C2 to produce COC(=O)c1ccc2c(c1)CCN(Cc1ccc(C3CCN(C(=O)OC(C)(C)C)CC3)cc1)C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.