Using O=C(OCCOCCN1CCN(C(=O)Nc2ccccc2Sc2ccccc2)CC1)c1ccccc1 to produce O=C(OCCOCCN1CCN(C2=Nc3ccccc3Sc3ccccc32)CC1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.