Using CCOCCC1CC(NC(C)=O)c2cc(S(N)(=O)=O)sc2S1(=O)=O to produce CCNC1CC(CCOCC)S(=O)(=O)c2sc(S(N)(=O)=O)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.