Using CC(C)(C)OC(=O)N1CCC(COC(=O)C(c2ccccc2)c2ccccc2)CC1, C=O to produce CC(C)(C)OC(=O)N1CCC(COC(=O)C(CO)(c2ccccc2)c2ccccc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.