Using CS(=O)(=O)OCCOCCc1ccccc1, Oc1ccc(OCc2ccccc2)cc1 to produce c1ccc(CCOCCOc2ccc(OCc3ccccc3)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.