Using COc1ccc(C(=O)C23CC4CC(C2)CC(C(=O)c2ccc(OC)cc2)(C4)C3)cc1 to produce O=C(c1ccc(O)cc1)C12CC3CC(C1)CC(C(=O)c1ccc(O)cc1)(C3)C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.