Using O=C1CC[C@@H](CCCO)[C@H](c2ccc(O)cc2O)C1, COC(OC)OC to produce COC12CCC(CCCO)C(C1)c1ccc(O)cc1O2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.