Using NC(=O)c1cccc2nc(C3CCCN(C(=O)OCc4ccccc4)C3)oc12 to produce NC(=O)c1cccc2nc(C3CCCNC3)oc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.