Using CC(C)(C)OC(=O)N1CCC2(C)c3cc4c(cc3CC1C2(C)C)OCO4 to produce CC12CCNC(Cc3cc4c(cc31)OCO4)C2(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.