Using COC(=O)C1(C)CCCC2(CN(CC(C)(C)C)C(=O)O2)C1 to produce CC(C)(C)CN1CC2(CCCC(C)(CO)C2)OC1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.