Using COc1ccccc1Oc1c(NS(=O)(=O)c2ccc(C(C)(C)C)cc2)nc(S(C)(=O)=O)nc1OCCO, CCCC[Sn](CCCC)(CCCC)COCOC to produce COCOCc1nc(NS(=O)(=O)c2ccc(C(C)(C)C)cc2)c(Oc2ccccc2OC)c(OCCO)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.