Using O=S(Cl)Cl, OCCn1c(-c2ccccc2)nc2cc(CN3CCN(C(c4ccccc4)c4ccccc4)CC3)ccc21 to produce ClCCn1c(-c2ccccc2)nc2cc(CN3CCN(C(c4ccccc4)c4ccccc4)CC3)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.