Using CC(=O)NC1(c2ccccc2)CCN(C2CCN(C(=O)OC(C)(C)C)C(Cc3ccccc3)C2)CC1 to produce CC(=O)NC1(c2ccccc2)CCN(C2CCNC(Cc3ccccc3)C2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.