Using CC(C)(C)OC(=O)c1c(N)sc2c1CCOC2CN, COCOc1cccc2c1C(=O)OC2=O to produce COCOc1cccc2c1C(=O)N(CC1OCCc3c1sc(N)c3C(=O)OC(C)(C)C)C2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.