Using CCOC(=O)c1cnc(COc2cc3c(cc2NC(=O)OC(C)(C)C)CCC3)cn1 to produce CCOC(=O)c1cnc(COc2cc3c(cc2N)CCC3)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.