Using CC(=O)OCCOCCN1CCN(C2=Nc3ccccc3Sc3ccccc32)CC1 to produce OCCOCCN1CCN(C2=Nc3ccccc3Sc3ccccc32)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.