Using Cc1ccc(CN2CCN3C(=O)OC(c4ccccc4)(c4ccccc4)C3C2)cc1 to produce O=C1OC(c2ccccc2)(c2ccccc2)C2CNCCN12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.