Using COc1ccc(OCC(=O)N2CCN(C(=O)OC(C)(C)C)CC2COc2cccnc2)cc1 to produce COc1ccc(OCC(=O)N2CCNCC2COc2cccnc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.