Using CCCc1c(OCCCOc2ccc3c(c2CCC)OC(C(=O)OC)CC3)ccc(C(=O)NC)c1O, COS(=O)(=O)OC to produce CCCc1c(OCCCOc2ccc(C(=O)NC)c(OC)c2CCC)ccc2c1OC(C(=O)OC)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.