Using CCOC(=O)CN(CCCc1ccc2cccnc2n1)C(=O)OC(C)(C)C to produce CCOC(=O)CN(CCCc1ccc2c(n1)NCCC2)C(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.