Using COCCOc1nc(N)c2nc(OC)[nH]c2n1, CS(=O)(=O)OCC1CCOC1 to produce COCCOc1nc(N)c2nc(OC)n(CC3CCOC3)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.